diff --git a/po/pamac.pot b/po/pamac.pot
index 678b8dc..e9d75ef 100644
--- a/po/pamac.pot
+++ b/po/pamac.pot
@@ -21,8 +21,7 @@ msgstr ""
 msgid "Authentication is required"
 msgstr ""
 
-
-#: ../src/daemon.vala
+#: ../src/daemon.vala ../src/manager_window.vala ../src/preferences_dialog.vala
 msgid "Failed to initialize alpm library"
 msgstr ""
 
@@ -30,14 +29,6 @@ msgstr ""
 msgid "Failed to synchronize any databases"
 msgstr ""
 
-#: ../src/daemon.vala
-msgid "No"
-msgstr ""
-
-#: ../src/daemon.vala
-msgid "Yes"
-msgstr ""
-
 #: ../src/daemon.vala
 msgid "Failed to init transaction"
 msgstr ""
@@ -90,7 +81,7 @@ msgstr ""
 msgid "%s is invalid or corrupted"
 msgstr ""
 
-#: ../src/daemon.vala
+#: ../src/daemon.vala ../src/transaction.vala
 msgid "Authentication failed"
 msgstr ""
 
@@ -110,6 +101,11 @@ msgstr ""
 msgid "Preparing"
 msgstr ""
 
+#: ../src/transaction.vala
+#, c-format
+msgid "Choose a provider for %s"
+msgstr ""
+
 #: ../src/transaction.vala ../resources/transaction_sum_dialog.ui
 msgid "Transaction Summary"
 msgstr ""
@@ -146,6 +142,14 @@ msgstr ""
 msgid "Building packages"
 msgstr ""
 
+#: ../src/transaction.vala
+msgid "Running pre-transaction hooks"
+msgstr ""
+
+#: ../src/transaction.vala
+msgid "Running post-transaction hooks"
+msgstr ""
+
 #: ../src/transaction.vala
 msgid "Checking dependencies"
 msgstr ""
@@ -257,11 +261,6 @@ msgstr ""
 msgid "%s installed as %s.pacsave"
 msgstr ""
 
-#: ../src/transaction.vala
-#, c-format
-msgid "%s installed as %s.pacorig"
-msgstr ""
-
 #: ../src/transaction.vala
 #, c-format
 msgid "Refreshing %s"
@@ -272,6 +271,18 @@ msgstr ""
 msgid "Downloading %s"
 msgstr ""
 
+#: ../src/transaction.vala
+#, c-format
+msgid "About %u seconds remaining"
+msgstr ""
+
+#: ../src/transaction.vala
+#, c-format
+msgid "About %lu minute remaining"
+msgid_plural "About %lu minutes remaining"
+msgstr[0] ""
+msgstr[1] ""
+
 #: ../src/transaction.vala
 msgid "Warning"
 msgstr ""
@@ -281,7 +292,7 @@ msgstr ""
 msgid "Error"
 msgstr ""
 
-#: ../src/transaction.vala ../src/progress_dialog.vala
+#: ../src/transaction.vala
 msgid "Transaction cancelled"
 msgstr ""
 
@@ -324,22 +335,6 @@ msgstr[1] ""
 msgid "Show available updates"
 msgstr ""
 
-#: ../src/choose_provider_dialog.vala
-#, c-format
-msgid "Choose a provider for %s"
-msgstr ""
-
-#: ../src/choose_dep_dialog.vala
-#, c-format
-msgid ""
-"%s has %u uninstalled optional dependency.\n"
-"Choose if you would like to install it"
-msgid_plural ""
-"%s has %u uninstalled optional dependencies.\n"
-"Choose those you would like to install"
-msgstr[0] ""
-msgstr[1] ""
-
 #: ../src/manager_window.vala
 msgid "Deselect"
 msgstr ""
@@ -380,6 +375,10 @@ msgstr ""
 msgid "Licenses"
 msgstr ""
 
+#: ../src/manager_window.vala
+msgid "Unknown"
+msgstr ""
+
 #: ../src/manager_window.vala
 msgid "Depends On"
 msgstr ""
@@ -416,18 +415,6 @@ msgstr ""
 msgid "Groups"
 msgstr ""
 
-#: ../src/manager_window.vala
-msgid "Maintainer"
-msgstr ""
-
-#: ../src/manager_window.vala
-msgid "First Submitted"
-msgstr ""
-
-#: ../src/manager_window.vala
-msgid "Last Modified"
-msgstr ""
-
 #: ../src/manager_window.vala
 msgid "Packager"
 msgstr ""
@@ -449,11 +436,15 @@ msgid "Installed as a dependency for another package"
 msgstr ""
 
 #: ../src/manager_window.vala
-msgid "Unknown"
+msgid "Install Reason"
 msgstr ""
 
 #: ../src/manager_window.vala
-msgid "Install Reason"
+msgid "Yes"
+msgstr ""
+
+#: ../src/manager_window.vala
+msgid "No"
 msgstr ""
 
 #: ../src/manager_window.vala
@@ -461,6 +452,22 @@ msgid "Signatures"
 msgstr ""
 
 #: ../src/manager_window.vala
+msgid "Backup files"
+msgstr ""
+
+#: ../src/manager_window.vala
+msgid "Maintainer"
+msgstr ""
+
+#: ../src/manager_window.vala
+msgid "First Submitted"
+msgstr ""
+
+#: ../src/manager_window.vala
+msgid "Last Modified"
+msgstr ""
+
+#: ../src/manager_window.vala ../resources/manager_window.ui
 msgid "Votes"
 msgstr ""
 
@@ -469,12 +476,15 @@ msgid "Out of Date"
 msgstr ""
 
 #: ../src/manager_window.vala
-msgid "Backup files"
-msgstr ""
-
-#: ../src/manager_window.vala
-msgid "No package found"
-msgstr ""
+#, c-format
+msgid ""
+"%s has %u uninstalled optional dependency.\n"
+"Choose if you would like to install it"
+msgid_plural ""
+"%s has %u uninstalled optional dependencies.\n"
+"Choose those you would like to install"
+msgstr[0] ""
+msgstr[1] ""
 
 #: ../src/manager_window.vala
 msgid "Uninstalled"
@@ -595,7 +605,7 @@ msgstr ""
 msgid "State"
 msgstr ""
 
-#: ../resources/manager_window.ui
+#: ../resources/manager_window.ui ../resources/updater_window.ui
 msgid "Repositories"
 msgstr ""
 
@@ -611,6 +621,11 @@ msgstr ""
 msgid "Size"
 msgstr ""
 
+#: ../resources/manager_window.ui ../resources/updater_window.ui
+#: ../resources/preferences_dialog.ui
+msgid "AUR"
+msgstr ""
+
 #: ../resources/manager_window.ui
 msgid "Description"
 msgstr ""
@@ -708,10 +723,6 @@ msgstr ""
 msgid "Do not ask for confirmation when building packages"
 msgstr ""
 
-#: ../resources/preferences_dialog.ui
-msgid "AUR"
-msgstr ""
-
 #: ../resources/choose_ignorepkgs_dialog.ui
 msgid "Choose Ignored Upgrades"
 msgstr ""
diff --git a/resources/manager_window.ui b/resources/manager_window.ui
index 590864d..20f65d8 100644
--- a/resources/manager_window.ui
+++ b/resources/manager_window.ui
@@ -207,8 +207,8 @@
                           <object class="GtkLabel" id="search_aur_label">
                             <property name="visible">True</property>
                             <property name="can_focus">False</property>
-                            <property name="hexpand">True</property>
                             <property name="margin_start">6</property>
+                            <property name="hexpand">True</property>
                             <property name="label" translatable="yes">Search in AUR</property>
                             <property name="xalign">0</property>
                           </object>
@@ -437,117 +437,242 @@
                 <property name="can_focus">True</property>
                 <property name="orientation">vertical</property>
                 <child>
-                  <object class="GtkScrolledWindow" id="scrolledwindow6">
-                    <property name="width_request">500</property>
-                    <property name="height_request">200</property>
+                  <object class="GtkNotebook" id="packages_notebook">
                     <property name="visible">True</property>
                     <property name="can_focus">True</property>
-                    <property name="hexpand">True</property>
-                    <property name="vexpand">True</property>
-                    <property name="shadow_type">in</property>
+                    <signal name="switch-page" handler="on_packages_notebook_switch_page" after="yes" swapped="no"/>
                     <child>
-                      <object class="GtkTreeView" id="packages_treeview">
+                      <object class="GtkScrolledWindow" id="packages_scrolledwindow">
+                        <property name="width_request">500</property>
+                        <property name="height_request">200</property>
                         <property name="visible">True</property>
                         <property name="can_focus">True</property>
                         <property name="hexpand">True</property>
                         <property name="vexpand">True</property>
-                        <property name="search_column">0</property>
-                        <property name="show_expanders">False</property>
-                        <signal name="button-press-event" handler="on_packages_treeview_button_press_event" swapped="no"/>
-                        <signal name="row-activated" handler="on_packages_treeview_row_activated" swapped="no"/>
-                        <child internal-child="selection">
-                          <object class="GtkTreeSelection" id="packages_treeview_selection">
-                            <property name="mode">multiple</property>
-                            <signal name="changed" handler="on_packages_treeview_selection_changed" swapped="no"/>
-                          </object>
-                        </child>
+                        <property name="shadow_type">in</property>
                         <child>
-                          <object class="GtkTreeViewColumn" id="state_column">
-                            <property name="resizable">True</property>
-                            <property name="fixed_width">40</property>
-                            <property name="min_width">20</property>
-                            <property name="title" translatable="yes">State</property>
-                            <property name="clickable">True</property>
-                            <signal name="clicked" handler="on_state_column_clicked" swapped="no"/>
-                            <child>
-                              <object class="GtkCellRendererPixbuf" id="state_rendererpixbuf"/>
-                              <attributes>
-                                <attribute name="pixbuf">1</attribute>
-                              </attributes>
+                          <object class="GtkTreeView" id="packages_treeview">
+                            <property name="visible">True</property>
+                            <property name="can_focus">True</property>
+                            <property name="hexpand">True</property>
+                            <property name="vexpand">True</property>
+                            <property name="search_column">0</property>
+                            <property name="show_expanders">False</property>
+                            <signal name="button-press-event" handler="on_packages_treeview_button_press_event" swapped="no"/>
+                            <signal name="row-activated" handler="on_packages_treeview_row_activated" swapped="no"/>
+                            <child internal-child="selection">
+                              <object class="GtkTreeSelection" id="treeview-selection">
+                                <property name="mode">multiple</property>
+                                <signal name="changed" handler="on_packages_treeview_selection_changed" swapped="no"/>
+                              </object>
                             </child>
-                          </object>
-                        </child>
-                        <child>
-                          <object class="GtkTreeViewColumn" id="name_column">
-                            <property name="resizable">True</property>
-                            <property name="fixed_width">150</property>
-                            <property name="min_width">20</property>
-                            <property name="title" translatable="yes">Name</property>
-                            <property name="expand">True</property>
-                            <property name="clickable">True</property>
-                            <signal name="clicked" handler="on_name_column_clicked" swapped="no"/>
                             <child>
-                              <object class="GtkCellRendererText" id="name_renderertext"/>
-                              <attributes>
-                                <attribute name="text">0</attribute>
-                              </attributes>
+                              <object class="GtkTreeViewColumn" id="packages_state_column">
+                                <property name="resizable">True</property>
+                                <property name="fixed_width">40</property>
+                                <property name="min_width">20</property>
+                                <property name="title" translatable="yes">State</property>
+                                <property name="clickable">True</property>
+                                <signal name="clicked" handler="on_packages_state_column_clicked" swapped="no"/>
+                                <child>
+                                  <object class="GtkCellRendererPixbuf" id="packages_state_rendererpixbuf"/>
+                                  <attributes>
+                                    <attribute name="pixbuf">1</attribute>
+                                  </attributes>
+                                </child>
+                              </object>
                             </child>
-                          </object>
-                        </child>
-                        <child>
-                          <object class="GtkTreeViewColumn" id="version_column">
-                            <property name="resizable">True</property>
-                            <property name="fixed_width">90</property>
-                            <property name="min_width">20</property>
-                            <property name="title" translatable="yes">Version</property>
-                            <property name="clickable">True</property>
-                            <signal name="clicked" handler="on_version_column_clicked" swapped="no"/>
                             <child>
-                              <object class="GtkCellRendererText" id="version_renderertext"/>
-                              <attributes>
-                                <attribute name="text">2</attribute>
-                              </attributes>
+                              <object class="GtkTreeViewColumn" id="packages_name_column">
+                                <property name="resizable">True</property>
+                                <property name="fixed_width">150</property>
+                                <property name="min_width">20</property>
+                                <property name="title" translatable="yes">Name</property>
+                                <property name="expand">True</property>
+                                <property name="clickable">True</property>
+                                <signal name="clicked" handler="on_packages_name_column_clicked" swapped="no"/>
+                                <child>
+                                  <object class="GtkCellRendererText" id="packages_name_renderertext"/>
+                                  <attributes>
+                                    <attribute name="text">0</attribute>
+                                  </attributes>
+                                </child>
+                              </object>
                             </child>
-                          </object>
-                        </child>
-                        <child>
-                          <object class="GtkTreeViewColumn" id="repo_column">
-                            <property name="resizable">True</property>
-                            <property name="fixed_width">90</property>
-                            <property name="min_width">20</property>
-                            <property name="title" translatable="yes">Repository</property>
-                            <property name="clickable">True</property>
-                            <signal name="clicked" handler="on_repo_column_clicked" swapped="no"/>
                             <child>
-                              <object class="GtkCellRendererText" id="repo_renderertext"/>
-                              <attributes>
-                                <attribute name="text">3</attribute>
-                              </attributes>
+                              <object class="GtkTreeViewColumn" id="packages_version_column">
+                                <property name="resizable">True</property>
+                                <property name="fixed_width">90</property>
+                                <property name="min_width">20</property>
+                                <property name="title" translatable="yes">Version</property>
+                                <property name="clickable">True</property>
+                                <signal name="clicked" handler="on_packages_version_column_clicked" swapped="no"/>
+                                <child>
+                                  <object class="GtkCellRendererText" id="packages_version_renderertext"/>
+                                  <attributes>
+                                    <attribute name="text">2</attribute>
+                                  </attributes>
+                                </child>
+                              </object>
                             </child>
-                          </object>
-                        </child>
-                        <child>
-                          <object class="GtkTreeViewColumn" id="size_column">
-                            <property name="resizable">True</property>
-                            <property name="fixed_width">90</property>
-                            <property name="min_width">20</property>
-                            <property name="title" translatable="yes">Size</property>
-                            <property name="clickable">True</property>
-                            <signal name="clicked" handler="on_size_column_clicked" swapped="no"/>
                             <child>
-                              <object class="GtkCellRendererText" id="size_renderertext"/>
-                              <attributes>
-                                <attribute name="text">4</attribute>
-                              </attributes>
+                              <object class="GtkTreeViewColumn" id="packages_repo_column">
+                                <property name="resizable">True</property>
+                                <property name="fixed_width">90</property>
+                                <property name="min_width">20</property>
+                                <property name="title" translatable="yes">Repository</property>
+                                <property name="clickable">True</property>
+                                <signal name="clicked" handler="on_packages_repo_column_clicked" swapped="no"/>
+                                <child>
+                                  <object class="GtkCellRendererText" id="packages_repo_renderertext"/>
+                                  <attributes>
+                                    <attribute name="text">3</attribute>
+                                  </attributes>
+                                </child>
+                              </object>
+                            </child>
+                            <child>
+                              <object class="GtkTreeViewColumn" id="packages_size_column">
+                                <property name="resizable">True</property>
+                                <property name="fixed_width">90</property>
+                                <property name="min_width">20</property>
+                                <property name="title" translatable="yes">Size</property>
+                                <property name="clickable">True</property>
+                                <signal name="clicked" handler="on_packages_size_column_clicked" swapped="no"/>
+                                <child>
+                                  <object class="GtkCellRendererText" id="packages_size_renderertext"/>
+                                  <attributes>
+                                    <attribute name="text">4</attribute>
+                                  </attributes>
+                                </child>
+                              </object>
                             </child>
                           </object>
                         </child>
                       </object>
                     </child>
+                    <child type="tab">
+                      <object class="GtkLabel" id="label1">
+                        <property name="visible">True</property>
+                        <property name="can_focus">False</property>
+                        <property name="label" translatable="yes">Repositories</property>
+                      </object>
+                      <packing>
+                        <property name="tab_fill">False</property>
+                      </packing>
+                    </child>
+                    <child>
+                      <object class="GtkScrolledWindow" id="aur_scrolledwindow">
+                        <property name="width_request">500</property>
+                        <property name="height_request">200</property>
+                        <property name="visible">True</property>
+                        <property name="can_focus">True</property>
+                        <property name="hexpand">True</property>
+                        <property name="vexpand">True</property>
+                        <property name="shadow_type">in</property>
+                        <child>
+                          <object class="GtkTreeView" id="aur_treeview">
+                            <property name="visible">True</property>
+                            <property name="can_focus">True</property>
+                            <property name="hexpand">True</property>
+                            <property name="vexpand">True</property>
+                            <property name="search_column">0</property>
+                            <property name="show_expanders">False</property>
+                            <signal name="button-press-event" handler="on_aur_treeview_button_press_event" swapped="no"/>
+                            <signal name="row-activated" handler="on_aur_treeview_row_activated" swapped="no"/>
+                            <child internal-child="selection">
+                              <object class="GtkTreeSelection" id="treeview-selection12">
+                                <property name="mode">multiple</property>
+                                <signal name="changed" handler="on_aur_treeview_selection_changed" swapped="no"/>
+                              </object>
+                            </child>
+                            <child>
+                              <object class="GtkTreeViewColumn" id="aur_state_column">
+                                <property name="resizable">True</property>
+                                <property name="fixed_width">40</property>
+                                <property name="min_width">20</property>
+                                <property name="title" translatable="yes">State</property>
+                                <property name="clickable">True</property>
+                                <signal name="clicked" handler="on_aur_state_column_clicked" swapped="no"/>
+                                <child>
+                                  <object class="GtkCellRendererPixbuf" id="aur_state_rendererpixbuf"/>
+                                  <attributes>
+                                    <attribute name="pixbuf">1</attribute>
+                                  </attributes>
+                                </child>
+                              </object>
+                            </child>
+                            <child>
+                              <object class="GtkTreeViewColumn" id="aur_name_column">
+                                <property name="resizable">True</property>
+                                <property name="fixed_width">150</property>
+                                <property name="min_width">20</property>
+                                <property name="title" translatable="yes">Name</property>
+                                <property name="expand">True</property>
+                                <property name="clickable">True</property>
+                                <signal name="clicked" handler="on_aur_name_column_clicked" swapped="no"/>
+                                <child>
+                                  <object class="GtkCellRendererText" id="aur_name_renderertext"/>
+                                  <attributes>
+                                    <attribute name="text">0</attribute>
+                                  </attributes>
+                                </child>
+                              </object>
+                            </child>
+                            <child>
+                              <object class="GtkTreeViewColumn" id="aur_version_column">
+                                <property name="resizable">True</property>
+                                <property name="fixed_width">90</property>
+                                <property name="min_width">20</property>
+                                <property name="title" translatable="yes">Version</property>
+                                <property name="clickable">True</property>
+                                <signal name="clicked" handler="on_aur_version_column_clicked" swapped="no"/>
+                                <child>
+                                  <object class="GtkCellRendererText" id="aur_version_renderertext"/>
+                                  <attributes>
+                                    <attribute name="text">2</attribute>
+                                  </attributes>
+                                </child>
+                              </object>
+                            </child>
+                            <child>
+                              <object class="GtkTreeViewColumn" id="aur_votes_column">
+                                <property name="resizable">True</property>
+                                <property name="fixed_width">90</property>
+                                <property name="min_width">20</property>
+                                <property name="title" translatable="yes">Votes</property>
+                                <property name="clickable">True</property>
+                                <signal name="clicked" handler="on_aur_votes_column_clicked" swapped="no"/>
+                                <child>
+                                  <object class="GtkCellRendererText" id="aur_votes_renderertext"/>
+                                  <attributes>
+                                    <attribute name="text">3</attribute>
+                                  </attributes>
+                                </child>
+                              </object>
+                            </child>
+                          </object>
+                        </child>
+                      </object>
+                      <packing>
+                        <property name="position">1</property>
+                      </packing>
+                    </child>
+                    <child type="tab">
+                      <object class="GtkLabel" id="label5">
+                        <property name="visible">True</property>
+                        <property name="can_focus">False</property>
+                        <property name="label" translatable="yes">AUR</property>
+                      </object>
+                      <packing>
+                        <property name="position">1</property>
+                        <property name="tab_fill">False</property>
+                      </packing>
+                    </child>
                   </object>
                   <packing>
                     <property name="resize">True</property>
-                    <property name="shrink">False</property>
+                    <property name="shrink">True</property>
                   </packing>
                 </child>
                 <child>
@@ -563,11 +688,11 @@
                         <property name="can_focus">True</property>
                         <property name="shadow_type">in</property>
                         <child>
-                          <object class="GtkViewport" id="viewport1">
+                          <object class="GtkViewport" id="viewport2">
                             <property name="visible">True</property>
-                            <property name="can_focus">True</property>
+                            <property name="can_focus">False</property>
                             <child>
-                              <object class="GtkBox" id="box5">
+                              <object class="GtkBox" id="box4">
                                 <property name="visible">True</property>
                                 <property name="can_focus">False</property>
                                 <property name="orientation">vertical</property>
@@ -575,8 +700,10 @@
                                 <child>
                                   <object class="GtkLabel" id="name_label">
                                     <property name="visible">True</property>
-                                    <property name="can_focus">True</property>
+                                    <property name="can_focus">False</property>
                                     <property name="halign">start</property>
+                                    <property name="margin_left">6</property>
+                                    <property name="margin_right">6</property>
                                     <property name="margin_start">6</property>
                                     <property name="margin_end">6</property>
                                     <property name="margin_top">6</property>
@@ -592,8 +719,10 @@
                                 <child>
                                   <object class="GtkLabel" id="desc_label">
                                     <property name="visible">True</property>
-                                    <property name="can_focus">True</property>
+                                    <property name="can_focus">False</property>
                                     <property name="halign">start</property>
+                                    <property name="margin_left">6</property>
+                                    <property name="margin_right">6</property>
                                     <property name="margin_start">6</property>
                                     <property name="margin_end">6</property>
                                     <property name="margin_top">6</property>
@@ -609,9 +738,10 @@
                                 <child>
                                   <object class="GtkLabel" id="link_label">
                                     <property name="visible">True</property>
-                                    <property name="can_focus">True</property>
-                                    <property name="has_focus">True</property>
+                                    <property name="can_focus">False</property>
                                     <property name="halign">start</property>
+                                    <property name="margin_left">6</property>
+                                    <property name="margin_right">6</property>
                                     <property name="margin_start">6</property>
                                     <property name="margin_end">6</property>
                                     <property name="margin_top">6</property>
@@ -626,8 +756,10 @@
                                 <child>
                                   <object class="GtkLabel" id="licenses_label">
                                     <property name="visible">True</property>
-                                    <property name="can_focus">True</property>
+                                    <property name="can_focus">False</property>
                                     <property name="halign">start</property>
+                                    <property name="margin_left">6</property>
+                                    <property name="margin_right">6</property>
                                     <property name="margin_start">6</property>
                                     <property name="margin_end">6</property>
                                     <property name="margin_top">6</property>
@@ -647,7 +779,7 @@
                       </object>
                     </child>
                     <child type="tab">
-                      <object class="GtkLabel" id="label1">
+                      <object class="GtkLabel" id="label7">
                         <property name="visible">True</property>
                         <property name="can_focus">False</property>
                         <property name="label" translatable="yes">Description</property>
@@ -670,7 +802,7 @@
                             <property name="enable_search">False</property>
                             <property name="show_expanders">False</property>
                             <child internal-child="selection">
-                              <object class="GtkTreeSelection" id="deps_treeview_selection">
+                              <object class="GtkTreeSelection" id="treeview-selection8">
                                 <property name="mode">none</property>
                               </object>
                             </child>
@@ -678,7 +810,7 @@
                               <object class="GtkTreeViewColumn" id="dep_type">
                                 <property name="sizing">autosize</property>
                                 <child>
-                                  <object class="GtkCellRendererText" id="cellrenderertext12">
+                                  <object class="GtkCellRendererText" id="cellrenderertext3">
                                     <property name="yalign">0</property>
                                     <property name="weight">600</property>
                                   </object>
@@ -692,7 +824,7 @@
                               <object class="GtkTreeViewColumn" id="deps">
                                 <property name="sizing">autosize</property>
                                 <child>
-                                  <object class="GtkCellRendererText" id="cellrenderertext13"/>
+                                  <object class="GtkCellRendererText" id="cellrenderertext5"/>
                                   <attributes>
                                     <attribute name="text">1</attribute>
                                   </attributes>
@@ -707,7 +839,7 @@
                       </packing>
                     </child>
                     <child type="tab">
-                      <object class="GtkLabel" id="label2">
+                      <object class="GtkLabel" id="label8">
                         <property name="visible">True</property>
                         <property name="can_focus">False</property>
                         <property name="label" translatable="yes">Dependencies</property>
@@ -732,7 +864,7 @@
                             <property name="search_column">0</property>
                             <property name="show_expanders">False</property>
                             <child internal-child="selection">
-                              <object class="GtkTreeSelection" id="treeview-selection6">
+                              <object class="GtkTreeSelection" id="treeview-selection10">
                                 <property name="mode">none</property>
                               </object>
                             </child>
@@ -740,7 +872,7 @@
                               <object class="GtkTreeViewColumn" id="infotype">
                                 <property name="sizing">autosize</property>
                                 <child>
-                                  <object class="GtkCellRendererText" id="cellrenderertext1">
+                                  <object class="GtkCellRendererText" id="cellrenderertext6">
                                     <property name="yalign">0</property>
                                     <property name="weight">600</property>
                                     <property name="wrap_mode">word</property>
@@ -752,10 +884,10 @@
                               </object>
                             </child>
                             <child>
-                              <object class="GtkTreeViewColumn" id="type">
+                              <object class="GtkTreeViewColumn" id="info">
                                 <property name="sizing">autosize</property>
                                 <child>
-                                  <object class="GtkCellRendererText" id="cellrenderertext4">
+                                  <object class="GtkCellRendererText" id="cellrenderertext7">
                                     <property name="wrap_mode">word</property>
                                   </object>
                                   <attributes>
@@ -772,7 +904,7 @@
                       </packing>
                     </child>
                     <child type="tab">
-                      <object class="GtkLabel" id="label3">
+                      <object class="GtkLabel" id="label9">
                         <property name="visible">True</property>
                         <property name="can_focus">False</property>
                         <property name="label" translatable="yes">Details</property>
@@ -824,7 +956,7 @@
               </object>
               <packing>
                 <property name="resize">True</property>
-                <property name="shrink">False</property>
+                <property name="shrink">True</property>
               </packing>
             </child>
           </object>
diff --git a/resources/progress_dialog.ui b/resources/progress_dialog.ui
index 5fdcc5d..e00357f 100644
--- a/resources/progress_dialog.ui
+++ b/resources/progress_dialog.ui
@@ -6,7 +6,7 @@
     <property name="title" translatable="yes">Progress</property>
     <property name="modal">True</property>
     <property name="window_position">center-on-parent</property>
-    <property name="default_width">500</property>
+    <property name="width_request">500</property>
     <property name="icon_name">system-software-install</property>
     <property name="type_hint">dialog</property>
     <property name="deletable">False</property>
@@ -29,7 +29,6 @@
                 <property name="use_underline">True</property>
                 <property name="visible">True</property>
                 <property name="can_focus">True</property>
-                <signal name="clicked" handler="on_cancel_button_clicked" swapped="no"/>
               </object>
               <packing>
                 <property name="expand">False</property>
diff --git a/resources/updater_window.ui b/resources/updater_window.ui
index c313d75..d09ed27 100644
--- a/resources/updater_window.ui
+++ b/resources/updater_window.ui
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<!-- Generated with glade 3.18.3 -->
+<!-- Generated with glade 3.19.0 -->
 <interface>
   <requires lib="gtk+" version="3.12"/>
   <template class="PamacUpdaterWindow" parent="GtkApplicationWindow">
@@ -30,64 +30,142 @@
           </packing>
         </child>
         <child>
-          <object class="GtkScrolledWindow" id="scrolledwindow1">
-            <property name="width_request">400</property>
-            <property name="height_request">400</property>
+          <object class="GtkNotebook" id="notebook">
             <property name="visible">True</property>
-            <property name="can_focus">False</property>
-            <property name="hexpand">True</property>
-            <property name="vexpand">True</property>
+            <property name="can_focus">True</property>
             <child>
-              <object class="GtkTreeView" id="updates_treeview">
+              <object class="GtkScrolledWindow" id="repos_scrolledwindow">
+                <property name="width_request">400</property>
+                <property name="height_request">400</property>
                 <property name="visible">True</property>
                 <property name="can_focus">True</property>
+                <property name="hexpand">True</property>
                 <property name="vexpand">True</property>
-                <property name="headers_visible">False</property>
-                <property name="headers_clickable">False</property>
-                <property name="search_column">0</property>
-                <child internal-child="selection">
-                  <object class="GtkTreeSelection" id="treeview-selection1">
-                    <property name="mode">none</property>
-                  </object>
-                </child>
                 <child>
-                  <object class="GtkTreeViewColumn" id="treeviewcolumn3">
-                    <child>
-                      <object class="GtkCellRendererToggle" id="select_update">
-                        <signal name="toggled" handler="on_select_update_toggled" swapped="no"/>
+                  <object class="GtkTreeView" id="repos_updates_treeview">
+                    <property name="visible">True</property>
+                    <property name="can_focus">True</property>
+                    <property name="vexpand">True</property>
+                    <property name="headers_visible">False</property>
+                    <property name="headers_clickable">False</property>
+                    <property name="search_column">0</property>
+                    <child internal-child="selection">
+                      <object class="GtkTreeSelection" id="treeview-selection">
+                        <property name="mode">none</property>
                       </object>
-                      <attributes>
-                        <attribute name="active">0</attribute>
-                      </attributes>
                     </child>
-                  </object>
-                </child>
-                <child>
-                  <object class="GtkTreeViewColumn" id="treeviewcolumn1">
-                    <property name="expand">True</property>
                     <child>
-                      <object class="GtkCellRendererText" id="update_name"/>
-                      <attributes>
-                        <attribute name="text">1</attribute>
-                      </attributes>
+                      <object class="GtkTreeViewColumn" id="treeviewcolumn3">
+                        <child>
+                          <object class="GtkCellRendererToggle" id="repos_select_update">
+                            <signal name="toggled" handler="on_repos_select_update_toggled" swapped="no"/>
+                          </object>
+                          <attributes>
+                            <attribute name="active">0</attribute>
+                          </attributes>
+                        </child>
+                      </object>
                     </child>
-                  </object>
-                </child>
-                <child>
-                  <object class="GtkTreeViewColumn" id="treeviewcolumn2">
                     <child>
-                      <object class="GtkCellRendererText" id="download_size"/>
-                      <attributes>
-                        <attribute name="text">2</attribute>
-                      </attributes>
+                      <object class="GtkTreeViewColumn" id="treeviewcolumn1">
+                        <property name="expand">True</property>
+                        <child>
+                          <object class="GtkCellRendererText" id="repos_update_name"/>
+                          <attributes>
+                            <attribute name="text">1</attribute>
+                          </attributes>
+                        </child>
+                      </object>
+                    </child>
+                    <child>
+                      <object class="GtkTreeViewColumn" id="treeviewcolumn2">
+                        <child>
+                          <object class="GtkCellRendererText" id="repos_update_download_size"/>
+                          <attributes>
+                            <attribute name="text">2</attribute>
+                          </attributes>
+                        </child>
+                      </object>
                     </child>
                   </object>
                 </child>
               </object>
             </child>
+            <child type="tab">
+              <object class="GtkLabel" id="label1">
+                <property name="visible">True</property>
+                <property name="can_focus">False</property>
+                <property name="label" translatable="yes">Repositories</property>
+              </object>
+              <packing>
+                <property name="tab_fill">False</property>
+              </packing>
+            </child>
+            <child>
+              <object class="GtkScrolledWindow" id="aur_scrolledwindow">
+                <property name="width_request">400</property>
+                <property name="height_request">400</property>
+                <property name="visible">True</property>
+                <property name="can_focus">True</property>
+                <property name="hexpand">True</property>
+                <property name="vexpand">True</property>
+                <child>
+                  <object class="GtkTreeView" id="aur_updates_treeview">
+                    <property name="visible">True</property>
+                    <property name="can_focus">True</property>
+                    <property name="vexpand">True</property>
+                    <property name="headers_visible">False</property>
+                    <property name="headers_clickable">False</property>
+                    <property name="search_column">0</property>
+                    <child internal-child="selection">
+                      <object class="GtkTreeSelection" id="treeview-selection2">
+                        <property name="mode">none</property>
+                      </object>
+                    </child>
+                    <child>
+                      <object class="GtkTreeViewColumn" id="treeviewcolumn4">
+                        <child>
+                          <object class="GtkCellRendererToggle" id="aur_select_update">
+                            <signal name="toggled" handler="on_aur_select_update_toggled" swapped="no"/>
+                          </object>
+                          <attributes>
+                            <attribute name="active">0</attribute>
+                          </attributes>
+                        </child>
+                      </object>
+                    </child>
+                    <child>
+                      <object class="GtkTreeViewColumn" id="treeviewcolumn5">
+                        <property name="expand">True</property>
+                        <child>
+                          <object class="GtkCellRendererText" id="aur_update_name"/>
+                          <attributes>
+                            <attribute name="text">1</attribute>
+                          </attributes>
+                        </child>
+                      </object>
+                    </child>
+                  </object>
+                </child>
+              </object>
+              <packing>
+                <property name="position">1</property>
+              </packing>
+            </child>
+            <child type="tab">
+              <object class="GtkLabel" id="label2">
+                <property name="visible">True</property>
+                <property name="can_focus">False</property>
+                <property name="label" translatable="yes">AUR</property>
+              </object>
+              <packing>
+                <property name="position">1</property>
+                <property name="tab_fill">False</property>
+              </packing>
+            </child>
           </object>
           <packing>
-            <property name="expand">True</property>
+            <property name="expand">False</property>
             <property name="fill">True</property>
             <property name="position">1</property>
           </packing>
diff --git a/src/Makefile b/src/Makefile
index d0ea1d5..c932344 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -1,23 +1,28 @@
 
-COMMON_VALA_FLAGS = 	-X -w \
+COMMON_VALA_FLAGS = 	-g --save-temps -X -w \
 						--pkg=libalpm \
 						--pkg=gio-2.0 \
+						--pkg=posix \
+						--pkg=json-glib-1.0 \
+						--pkg=libsoup-2.4 \
 						--vapidir=../vapi \
 						--Xcc=-I../util \
 						-X -D_FILE_OFFSET_BITS=64 \
 						-X -DGETTEXT_PACKAGE="pamac" \
 						--target-glib=2.38
 
-TRANSACTION_VALA_FLAGS = 	--pkg=json-glib-1.0 \
-							--pkg=gtk+-3.0 \
+TRANSACTION_VALA_FLAGS = 	--pkg=gtk+-3.0 \
 							--pkg=gmodule-2.0 \
 							--pkg=gdk-3.0 \
-							--pkg=vte-2.91
+							--pkg=vte-2.91 \
+							-X -lm
 
 COMMON_SOURCES = 	../util/alpm-util.c \
 					common.vala \
 					pamac_config.vala \
-					package.vala \
+					alpm_config.vala \
+					alpm_utils.vala \
+					aur.vala \
 
 TRANSACTION_SOURCES = 	transaction.vala \
 						choose_provider_dialog.vala \
@@ -44,37 +49,28 @@ pamac-refresh: pamac_config.vala refresh.vala
 	valac 	-o pamac-refresh \
 			-X -w \
 			--pkg=gio-2.0 \
+			--pkg=posix \
 			pamac_config.vala \
 			refresh.vala
 
-pamac-tray: ../vapi/libalpm.vapi ../util/alpm-util.c common.vala alpm_config.vala pamac_config.vala tray.vala
+pamac-tray: ../vapi/libalpm.vapi $(COMMON_SOURCES) tray.vala
 	valac 	-o pamac-tray \
 			$(COMMON_VALA_FLAGS) \
-			../util/alpm-util.c \
-			--pkg=posix \
 			--pkg=gtk+-3.0 \
 			--pkg=libnotify \
-			common.vala \
-			alpm_config.vala \
-			pamac_config.vala \
+			$(COMMON_SOURCES) \
 			tray.vala
 
-pamac-daemon: ../vapi/libalpm.vapi ../vapi/polkit-gobject-1.vapi $(COMMON_SOURCES) mirrors_config.vala alpm_config.vala alpm_utils.vala aur.vala daemon.vala
+pamac-daemon: ../vapi/libalpm.vapi ../vapi/polkit-gobject-1.vapi $(COMMON_SOURCES) mirrors_config.vala daemon.vala
 	valac 	-o pamac-daemon \
 			$(COMMON_VALA_FLAGS) \
-			--pkg=posix \
-			--pkg=json-glib-1.0 \
-			--pkg=libsoup-2.4 \
 			--pkg=polkit-gobject-1 \
 			--thread \
 			$(COMMON_SOURCES) \
 			mirrors_config.vala \
-			alpm_config.vala \
-			aur.vala \
-			alpm_utils.vala \
 			daemon.vala
 
-pamac-manager: ../vapi/libalpm.vapi $(COMMON_SOURCES) $(TRANSACTION_SOURCES) $(PREFERENCES_SOURCES) choose_dep_dialog.vala history_dialog.vala ../resources/manager_resources.c packages_model.vala manager_window.vala manager.vala
+pamac-manager: ../vapi/libalpm.vapi $(COMMON_SOURCES) $(TRANSACTION_SOURCES) $(PREFERENCES_SOURCES) choose_dep_dialog.vala history_dialog.vala ../resources/manager_resources.c packages_model.vala aur_model.vala manager_window.vala manager.vala
 	valac 	-o pamac-manager \
 			$(COMMON_VALA_FLAGS) \
 			$(TRANSACTION_VALA_FLAGS) \
@@ -86,6 +82,7 @@ pamac-manager: ../vapi/libalpm.vapi $(COMMON_SOURCES) $(TRANSACTION_SOURCES) $(P
 			choose_dep_dialog.vala \
 			history_dialog.vala \
 			packages_model.vala \
+			aur_model.vala \
 			manager_window.vala \
 			manager.vala
 
diff --git a/src/alpm_config.vala b/src/alpm_config.vala
index 95ce58c..a0d8e7d 100644
--- a/src/alpm_config.vala
+++ b/src/alpm_config.vala
@@ -1,7 +1,7 @@
 /*
  *  pamac-vala
  *
- *  Copyright (C) 2014-2015 Guillaume Benoit <guillaume@manjaro.org>
+ *  Copyright (C) 2014-2016 Guillaume Benoit <guillaume@manjaro.org>
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -18,112 +18,163 @@
  */
 
 namespace Alpm {
-	class Repo {
+	[Compact]
+	public class Repo {
 		public string name;
 		public Signature.Level siglevel;
+		public Signature.Level siglevel_mask;
 		public DB.Usage usage;
-		public string[] urls;
+		public GLib.List<string> urls;
 
 		public Repo (string name) {
 			this.name = name;
 			siglevel = Signature.Level.USE_DEFAULT;
 			usage = 0;
-			urls = {};
-		} 
+			urls = new GLib.List<string> ();
+		}
+
+		public static int compare_name (Repo a, Repo b) {
+			return strcmp (a.name, b.name);
+		}
+
+		public static int search_name (Repo a, string name) {
+			return strcmp (a.name, name);
+		}
+
 	}
 
+	[Compact]
 	public class Config {
-		string conf_path;
-		string rootdir;
-		string dbpath;
-		string gpgdir;
-		string logfile;
-		string arch;
-		double deltaratio;
-		int usesyslog;
+		public string conf_path;
+		public string? rootdir;
+		public string? dbpath;
+		public string? logfile;
+		public string? gpgdir;
+		public string? arch;
+		public double deltaratio;
+		public int usesyslog;
 		public int checkspace;
-		Alpm.List<string> *cachedirs;
-		Alpm.List<string> *ignoregroups;
-		public Alpm.List<string> *ignorepkgs;
-		Alpm.List<string> *noextracts;
-		Alpm.List<string> *noupgrades;
-		public GLib.List<string> holdpkgs;
-		public GLib.List<string> syncfirsts;
-		Signature.Level defaultsiglevel;
-		Signature.Level localfilesiglevel;
-		Signature.Level remotefilesiglevel;
-		Repo[] repo_order;
-		public unowned Handle? handle;
+		public Alpm.List<string>? cachedirs;
+		public Alpm.List<string?>? hookdirs;
+		public Alpm.List<string>? ignoregroups;
+		public Alpm.List<string>? ignorepkgs;
+		public Alpm.List<string>? noextracts;
+		public Alpm.List<string>? noupgrades;
+		public GLib.List<string>? holdpkgs;
+		public GLib.List<string>? syncfirsts;
+		public Signature.Level siglevel;
+		public Signature.Level localfilesiglevel;
+		public Signature.Level remotefilesiglevel;
+		public Signature.Level siglevel_mask;
+		public Signature.Level localfilesiglevel_mask;
+		public Signature.Level remotefilesiglevel_mask;
+		public GLib.List<Repo> repo_order;
+		public Handle? handle;
 
 		public Config (string path) {
 			conf_path = path;
-			handle = null;
 			reload ();
 		}
 
 		public void reload () {
 			// set default options
-			rootdir = "/";
-			dbpath = "/var/lib/pacman";
-			gpgdir = "/etc/pacman.d/gnupg/";
-			logfile = "/var/log/pacman.log";
-			string default_cachedir = "/var/cache/pacman/pkg/";
-			arch = Posix.utsname().machine;
 			holdpkgs = new GLib.List<string> ();
 			syncfirsts = new GLib.List<string> ();
-			Alpm.List.free_all (cachedirs);
-			Alpm.List.free_all (ignoregroups);
-			Alpm.List.free_all (ignorepkgs);
-			Alpm.List.free_all (noextracts);
-			Alpm.List.free_all (noupgrades);
-			cachedirs = new Alpm.List<string> ();
-			cachedirs->add_str (default_cachedir);
-			ignoregroups = new Alpm.List<string> ();
-			ignorepkgs = new Alpm.List<string> ();
-			noextracts = new Alpm.List<string> ();
-			noupgrades = new Alpm.List<string> ();
+			// free internal data of alpm lists
+			if (cachedirs != null) {
+				cachedirs.free_data ();
+			}
+			if (hookdirs != null) {
+				hookdirs.free_data ();
+			}
+			if (ignoregroups != null) {
+				ignoregroups.free_data ();
+			}
+			if (ignorepkgs != null) {
+				ignorepkgs.free_data ();
+			}
+			if (noextracts != null) {
+				noextracts.free_data ();
+			}
+			if (noupgrades != null) {
+				noupgrades.free_data ();
+			}
 			usesyslog = 0;
 			checkspace = 0;
 			deltaratio = 0.7;
-			defaultsiglevel = Signature.Level.PACKAGE | Signature.Level.PACKAGE_OPTIONAL | Signature.Level.DATABASE | Signature.Level.DATABASE_OPTIONAL;
+			siglevel = Signature.Level.PACKAGE | Signature.Level.PACKAGE_OPTIONAL | Signature.Level.DATABASE | Signature.Level.DATABASE_OPTIONAL;
 			localfilesiglevel = Signature.Level.USE_DEFAULT;
 			remotefilesiglevel = Signature.Level.USE_DEFAULT;
-			repo_order = {};
+			repo_order = new GLib.List<Repo> ();
 			// parse conf file
 			parse_file (conf_path);
+			// if rootdir is set and dbpath/logfile are not
+			// set, then set those as well to reside under the root.
+			if (rootdir != null) {
+				if (dbpath == null) {
+					dbpath = Path.build_path ("/", rootdir, "var/lib/pacman/");
+				}
+				if (logfile == null) {
+					logfile = Path.build_path ("/", rootdir, "var/log/pacman.log");
+				}
+			} else {
+				rootdir = "/";
+				if (dbpath == null) {
+					dbpath = "/var/lib/pacman/";
+				}
+				if (logfile == null) {
+					logfile = "/var/log/pacman.log";
+				}
+			}
+			if (cachedirs.length == 0) {
+				cachedirs.add ("/var/cache/pacman/pkg/");
+			}
+			if (hookdirs.length == 0) {
+				hookdirs.add ("/etc/pacman.d/hooks/");
+			}
+			if (gpgdir == null) {
+				// gpgdir it is not relative to rootdir, even if
+				// rootdir is defined because it contains configuration data.
+				gpgdir = "/etc/pacman.d/gnupg/";
+			}
+			if (arch == null) {
+				arch = Posix.utsname().machine;
+			}
 		}
 
 		public void get_handle () {
 			Alpm.Errno error;
-			if (handle != null) {
-				Handle.release (handle);
-			}
 			handle = Handle.new (rootdir, dbpath, out error);
 			if (handle == null) {
 				stderr.printf ("Failed to initialize alpm library" + " (%s)\n".printf(Alpm.strerror (error)));
 				return;
 			}
 			// define options
-			handle.gpgdir = gpgdir;
 			handle.logfile = logfile;
+			handle.gpgdir = gpgdir;
 			handle.arch = arch;
 			handle.deltaratio = deltaratio;
 			handle.usesyslog = usesyslog;
 			handle.checkspace = checkspace;
-			handle.defaultsiglevel = defaultsiglevel;
-			localfilesiglevel = merge_siglevel (defaultsiglevel, localfilesiglevel);
-			remotefilesiglevel = merge_siglevel (defaultsiglevel, remotefilesiglevel);
+			handle.defaultsiglevel = siglevel;
+			localfilesiglevel = merge_siglevel (siglevel, localfilesiglevel, localfilesiglevel_mask);
+			remotefilesiglevel = merge_siglevel (siglevel, remotefilesiglevel, remotefilesiglevel_mask);
 			handle.localfilesiglevel = localfilesiglevel;
 			handle.remotefilesiglevel = remotefilesiglevel;
 			handle.cachedirs = cachedirs;
+			// add hook directories 1-by-1 to avoid overwriting the system directory
+			foreach (unowned string hookdir in hookdirs) {
+				handle.add_hookdir (hookdir);
+			}
 			handle.ignoregroups = ignoregroups;
 			handle.ignorepkgs = ignorepkgs;
 			handle.noextracts = noextracts;
 			handle.noupgrades = noupgrades;
 			// register dbs
-			foreach (var repo in repo_order) {
+			foreach (unowned Repo repo in repo_order) {
+				repo.siglevel = merge_siglevel (siglevel, repo.siglevel, repo.siglevel_mask);
 				unowned DB db = handle.register_syncdb (repo.name, repo.siglevel);
-				foreach (var url in repo.urls) {
+				foreach (unowned string url in repo.urls) {
 					db.add_server (url.replace ("$repo", repo.name).replace ("$arch", handle.arch));
 				}
 				if (repo.usage == 0) {
@@ -158,21 +209,37 @@ namespace Alpm {
 							current_section = line[1:-1];
 							if (current_section != "options") {
 								var repo = new Repo (current_section);
-								repo_order += repo;
+								if (repo_order.find_custom (repo, Repo.compare_name) == null) {
+									repo_order.append ((owned) repo);
+								}
 							}
 							continue;
 						}
 						splitted = line.split ("=", 2);
-						string key = splitted[0].strip ();
-						string? val = null;
-						if (splitted[1] != null) {
-							val = splitted[1].strip ();
+						unowned string key = splitted[0]._strip ();
+						unowned string? val = null;
+						if (splitted.length == 2) {
+							val = splitted[1]._strip ();
 						}
 						if (key == "Include") {
 							parse_file (val, current_section);
 						}
 						if (current_section == "options") {
-							if (key == "GPGDir") {
+							if (key == "RootDir") {
+								rootdir = val;
+							} else if (key == "DBPath") {
+								dbpath = val;
+							} else if (key == "CacheDir") {
+								foreach (unowned string dir in val.split (" ")) {
+									cachedirs.add (dir);
+								}
+							} else if (key == "HookDir") {
+								foreach (unowned string dir in val.split (" ")) {
+									hookdirs.add (dir);
+								}
+							} else if (key == "LogFile") {
+								logfile = val;
+							} else if (key == "GPGDir") {
 								gpgdir = val;
 							} else if (key == "LogFile") {
 								logfile = val;
@@ -189,53 +256,46 @@ namespace Alpm {
 							} else if (key == "CheckSpace") {
 								checkspace = 1;
 							} else if (key == "SigLevel") {
-								defaultsiglevel = define_siglevel (defaultsiglevel, val);
+								process_siglevel (val, ref siglevel, ref siglevel_mask);
 							} else if (key == "LocalFileSigLevel") {
-								localfilesiglevel = define_siglevel (localfilesiglevel, val);
+								process_siglevel (val, ref localfilesiglevel, ref localfilesiglevel_mask);
 							} else if (key == "RemoteFileSigLevel") {
-								remotefilesiglevel = define_siglevel (remotefilesiglevel, val);
+								process_siglevel (val, ref remotefilesiglevel, ref remotefilesiglevel_mask);
 							} else if (key == "HoldPkg") {
-								foreach (string name in val.split (" ")) {
+								foreach (unowned string name in val.split (" ")) {
 									holdpkgs.append (name);
 								}
 							} else if (key == "SyncFirst") {
-								foreach (string name in val.split (" ")) {
+								foreach (unowned string name in val.split (" ")) {
 									syncfirsts.append (name);
 								}
-							} else if (key == "CacheDir") {
-								foreach (string dir in val.split (" ")) {
-									cachedirs->add_str (dir);
-								}
 							} else if (key == "IgnoreGroup") {
-								foreach (string name in val.split (" ")) {
-									ignoregroups->add_str (name);
+								foreach (unowned string name in val.split (" ")) {
+									ignoregroups.add (name);
 								}
 							} else if (key == "IgnorePkg") {
-								foreach (string name in val.split (" ")) {
-									ignorepkgs->add_str (name);
+								foreach (unowned string name in val.split (" ")) {
+									ignorepkgs.add (name);
 								}
 							} else if (key == "Noextract") {
-								foreach (string name in val.split (" ")) {
-									noextracts->add_str (name);
+								foreach (unowned string name in val.split (" ")) {
+									noextracts.add (name);
 								}
 							} else if (key == "NoUpgrade") {
-								foreach (string name in val.split (" ")) {
-									noupgrades->add_str (name);
+								foreach (unowned string name in val.split (" ")) {
+									noupgrades.add (name);
 								}
 							}
 						} else {
-							foreach (var repo in repo_order) {
-								if (repo.name == current_section) {
-									if (key == "Server") {
-										repo.urls += val;
-									} else if (key == "SigLevel") {
-										if (repo.siglevel == Signature.Level.USE_DEFAULT) {
-											repo.siglevel = defaultsiglevel;
-										}
-										repo.siglevel = define_siglevel (repo.siglevel, val);
-									} else if (key == "Usage") {
-										repo.usage = define_usage (val);
-									}
+							unowned GLib.List<Repo>? found = repo_order.search (current_section, (SearchFunc) Repo.search_name);
+							if (found != null) {
+								unowned Repo repo = found.data;
+								if (key == "Server") {
+									repo.urls.append (val);
+								} else if (key == "SigLevel") {
+									process_siglevel (val, ref repo.siglevel, ref repo.siglevel_mask);
+								} else if (key == "Usage") {
+									repo.usage = define_usage (val);
 								}
 							}
 						}
@@ -295,7 +355,7 @@ namespace Alpm {
 					file.delete ();
 					// creating a DataOutputStream to the file
 					var dos = new DataOutputStream (file.create (FileCreateFlags.REPLACE_DESTINATION));
-					foreach (string new_line in data) {
+					foreach (unowned string new_line in data) {
 						// writing a short string to the stream
 						dos.put_string (new_line);
 					}
@@ -309,7 +369,7 @@ namespace Alpm {
 
 		public DB.Usage define_usage (string conf_string) {
 			DB.Usage usage = 0;
-			foreach (string directive in conf_string.split(" ")) {
+			foreach (unowned string directive in conf_string.split(" ")) {
 				if (directive == "Sync") {
 					usage |= DB.Usage.SYNC;
 				} else if (directive == "Search") {
@@ -325,8 +385,8 @@ namespace Alpm {
 			return usage;
 		}
 
-		public Signature.Level define_siglevel (Signature.Level default_level, string conf_string) {
-			foreach (string directive in conf_string.split(" ")) {
+		public void process_siglevel (string conf_string, ref Signature.Level siglevel, ref Signature.Level siglevel_mask) {
+			foreach (unowned string directive in conf_string.split(" ")) {
 				bool affect_package = false;
 				bool affect_database = false;
 				if ("Package" in directive) {
@@ -339,72 +399,62 @@ namespace Alpm {
 				}
 				if ("Never" in directive) {
 					if (affect_package) {
-						default_level &= ~Signature.Level.PACKAGE;
-						default_level |= Signature.Level.PACKAGE_SET;
+						siglevel &= ~Signature.Level.PACKAGE;
+						siglevel_mask |= Signature.Level.PACKAGE;
 					}
 					if (affect_database) {
-						default_level &= ~Signature.Level.DATABASE;
+						siglevel &= ~Signature.Level.DATABASE;
+						siglevel_mask |= Signature.Level.DATABASE;
 					}
 				} else if ("Optional" in directive) {
 					if (affect_package) {
-						default_level |= Signature.Level.PACKAGE;
-						default_level |= Signature.Level.PACKAGE_OPTIONAL;
-						default_level |= Signature.Level.PACKAGE_SET;
+						siglevel |= (Signature.Level.PACKAGE | Signature.Level.PACKAGE_OPTIONAL);
+						siglevel_mask |= (Signature.Level.PACKAGE | Signature.Level.PACKAGE_OPTIONAL);
 					}
 					if (affect_database) {
-						default_level |= Signature.Level.DATABASE;
-						default_level |= Signature.Level.DATABASE_OPTIONAL;
+						siglevel |= (Signature.Level.DATABASE | Signature.Level.DATABASE_OPTIONAL);
+						siglevel_mask |= (Signature.Level.DATABASE | Signature.Level.DATABASE_OPTIONAL);
 					}
 				} else if ("Required" in directive) {
 					if (affect_package) {
-						default_level |= Signature.Level.PACKAGE;
-						default_level &= ~Signature.Level.PACKAGE_OPTIONAL;
-						default_level |= Signature.Level.PACKAGE_SET;
+						siglevel |= Signature.Level.PACKAGE;
+						siglevel_mask |= Signature.Level.PACKAGE;
+						siglevel &= ~Signature.Level.PACKAGE_OPTIONAL;
+						siglevel_mask |= Signature.Level.PACKAGE_OPTIONAL;
 					}
 					if (affect_database) {
-						default_level |= Signature.Level.DATABASE;
-						default_level &= ~Signature.Level.DATABASE_OPTIONAL;
+						siglevel |= Signature.Level.DATABASE;
+						siglevel_mask |= Signature.Level.DATABASE;
+						siglevel &= ~Signature.Level.DATABASE_OPTIONAL;
+						siglevel_mask |= Signature.Level.DATABASE_OPTIONAL;
 					}
 				} else if ("TrustedOnly" in directive) {
 					if (affect_package) {
-						default_level &= ~Signature.Level.PACKAGE_MARGINAL_OK;
-						default_level &= ~Signature.Level.PACKAGE_UNKNOWN_OK;
-						default_level |= Signature.Level.PACKAGE_TRUST_SET;
+						siglevel &= ~(Signature.Level.PACKAGE_MARGINAL_OK | Signature.Level.PACKAGE_UNKNOWN_OK);
+						siglevel_mask |= (Signature.Level.PACKAGE_MARGINAL_OK | Signature.Level.PACKAGE_UNKNOWN_OK);
 					}
 					if (affect_database) {
-						default_level &= ~Signature.Level.DATABASE_MARGINAL_OK;
-						default_level &= ~Signature.Level.DATABASE_UNKNOWN_OK;
+						siglevel &= ~(Signature.Level.DATABASE_MARGINAL_OK | Signature.Level.DATABASE_UNKNOWN_OK);
+						siglevel_mask |= (Signature.Level.DATABASE_MARGINAL_OK | Signature.Level.DATABASE_UNKNOWN_OK);
 					}
 				} else if ("TrustAll" in directive) {
 					if (affect_package) {
-						default_level |= Signature.Level.PACKAGE_MARGINAL_OK;
-						default_level |= Signature.Level.PACKAGE_UNKNOWN_OK;
-						default_level |= Signature.Level.PACKAGE_TRUST_SET;
+						siglevel |= (Signature.Level.PACKAGE_MARGINAL_OK | Signature.Level.PACKAGE_UNKNOWN_OK);
+						siglevel_mask |= (Signature.Level.PACKAGE_MARGINAL_OK | Signature.Level.PACKAGE_UNKNOWN_OK);
 					}
 					if (affect_database) {
-						default_level |= Signature.Level.DATABASE_MARGINAL_OK;
-						default_level |= Signature.Level.DATABASE_UNKNOWN_OK;
+						siglevel |= (Signature.Level.DATABASE_MARGINAL_OK | Signature.Level.DATABASE_UNKNOWN_OK);
+						siglevel_mask |= (Signature.Level.DATABASE_MARGINAL_OK | Signature.Level.DATABASE_UNKNOWN_OK);
 					}
 				} else {
 					GLib.stderr.printf("unrecognized siglevel: %s\n", conf_string);
 				}
 			}
-			default_level &= ~Signature.Level.USE_DEFAULT;
-			return default_level;
+			siglevel &= ~Signature.Level.USE_DEFAULT;
 		}
 
-		public Signature.Level merge_siglevel (Signature.Level base_level, Signature.Level over_level) {
-			if ((over_level & Signature.Level.USE_DEFAULT) == 0) {
-				if ((over_level & Signature.Level.PACKAGE_SET) == 0) {
-					over_level |= base_level & Signature.Level.PACKAGE;
-					over_level |= base_level & Signature.Level.PACKAGE_OPTIONAL;
-				}
-				if ((over_level & Signature.Level.PACKAGE_TRUST_SET) == 0) {
-					over_level |= base_level & Signature.Level.PACKAGE_MARGINAL_OK;
-					over_level |= base_level & Signature.Level.PACKAGE_UNKNOWN_OK;
-				}
-			}
-			return over_level;
+		public Signature.Level merge_siglevel(Signature.Level sigbase, Signature.Level sigover, Signature.Level sigmask) {
+			return (sigmask != 0) ? (sigover & sigmask) | (sigbase & ~sigmask) : sigover;
 		}
 	}
 }
diff --git a/src/alpm_utils.vala b/src/alpm_utils.vala
index 4f7ffbb..36d0377 100644
--- a/src/alpm_utils.vala
+++ b/src/alpm_utils.vala
@@ -17,59 +17,22 @@
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-public int pkgcmp (Alpm.Package pkg1, Alpm.Package pkg2) {
-	return strcmp (pkg1.name, pkg2.name);
+public int compare_name (Alpm.Package pkg_a, Alpm.Package pkg_b) {
+	return strcmp (pkg_a.name, pkg_b.name);
 }
 
-public Alpm.List<unowned Alpm.Package?> search_all_dbs (Alpm.Handle handle, Alpm.List<string?> needles) {
-	var syncpkgs = new Alpm.List<unowned Alpm.Package?> ();
-	var result = handle.localdb.search (needles);
-
-	foreach (var db in handle.syncdbs) {
-		if (syncpkgs.length == 0)
-			syncpkgs = db.search (needles);
-		else {
-			syncpkgs.join (db.search (needles).diff (syncpkgs, (Alpm.List.CompareFunc) pkgcmp));
-		}
-	}
-
-	result.join (syncpkgs.diff (result, (Alpm.List.CompareFunc) pkgcmp));
-	//result.sort ((Alpm.List.CompareFunc) pkgcmp);
-
-	return result;
+public int compare_state (Alpm.Package pkg_a, Alpm.Package pkg_b) {
+	return (int) (pkg_a.origin > pkg_b.origin) - (int) (pkg_a.origin < pkg_b.origin);
 }
 
-public Alpm.List<unowned Alpm.Package?> group_pkgs (Alpm.Handle handle, string grp_name) {
-	var result = new Alpm.List<unowned Alpm.Package?> ();
-
-	unowned Alpm.Group? grp = handle.localdb.get_group (grp_name);
-	if (grp != null) {
-		foreach (var pkg in grp.packages)
-			result.add (pkg);
-	}
-
-	result.join (Alpm.find_group_pkgs (handle.syncdbs, grp_name).diff (result, (Alpm.List.CompareFunc) pkgcmp));
-
-	//result.sort ((Alpm.List.CompareFunc) pkgcmp);
-
-	return result;
+public int compare_version (Alpm.Package pkg_a, Alpm.Package pkg_b) {
+	return Alpm.pkg_vercmp (pkg_a.version, pkg_b.version);
 }
 
-public Alpm.List<unowned Alpm.Package?> all_pkgs (Alpm.Handle handle) {
-	var syncpkgs = new Alpm.List<unowned Alpm.Package?> ();
-	var result = new Alpm.List<unowned Alpm.Package?> ();
-	result = handle.localdb.pkgcache.copy ();
-
-	foreach (var db in handle.syncdbs) {
-		if (syncpkgs.length == 0)
-			syncpkgs = db.pkgcache.copy ();
-		else {
-			syncpkgs.join (db.pkgcache.diff (syncpkgs, (Alpm.List.CompareFunc) pkgcmp));
-		}
-	}
-
-	result.join (syncpkgs.diff (result, (Alpm.List.CompareFunc) pkgcmp));
-	//result.sort ((Alpm.List.CompareFunc) pkgcmp);
-
-	return result;
+public int compare_repo (Alpm.Package pkg_a, Alpm.Package pkg_b) {
+	return strcmp (pkg_a.db.name, pkg_b.db.name);
+}
+
+public int compare_size (Alpm.Package pkg_a, Alpm.Package pkg_b) {
+	return (int) (pkg_a.isize > pkg_b.isize) - (int) (pkg_a.isize < pkg_b.isize);
 }
diff --git a/src/aur_model.vala b/src/aur_model.vala
new file mode 100644
index 0000000..fa6009d
--- /dev/null
+++ b/src/aur_model.vala
@@ -0,0 +1,271 @@
+/*
+ *  pamac-vala
+ *
+ *  Copyright (C) 2014-2016 Guillaume Benoit <guillaume@manjaro.org>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a get of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+Pamac.ManagerWindow manager_window;
+
+// custom sort functions
+public int aur_compare_name (Json.Object pkg_a, Json.Object pkg_b) {
+	return strcmp (pkg_a.get_string_member ("Name"), pkg_b.get_string_member ("Name"));
+}
+
+public int aur_compare_state (Json.Object pkg_a, Json.Object pkg_b) {
+	unowned Alpm.Package? alpm_pkg_a = manager_window.alpm_config.handle.localdb.get_pkg (pkg_a.get_string_member ("Name"));
+	unowned Alpm.Package? alpm_pkg_b = manager_window.alpm_config.handle.localdb.get_pkg (pkg_b.get_string_member ("Name"));
+	if (pkg_a != null) {
+		if (pkg_b != null) {
+			return (int) (alpm_pkg_a.origin > alpm_pkg_b.origin) - (int) (alpm_pkg_a.origin < alpm_pkg_b.origin);
+		} else {
+			return 1;
+		}
+	} else {
+		if (pkg_b != null) {
+			return -1;
+		} else {
+			return 0;
+		}
+	}
+}
+
+public int aur_compare_version (Json.Object pkg_a, Json.Object pkg_b) {
+	return Alpm.pkg_vercmp (pkg_a.get_string_member ("Version"), pkg_b.get_string_member ("Version"));
+}
+
+public int aur_compare_votes (Json.Object pkg_a, Json.Object pkg_b) {
+	return (int) (pkg_a.get_int_member ("NumVotes") > pkg_b.get_int_member ("NumVotes")) - (int) (pkg_a.get_int_member ("NumVotes") < pkg_b.get_int_member ("NumVotes"));
+}
+
+namespace Pamac {
+
+	public class AURModel : Object, Gtk.TreeModel {
+		private Json.Array pkgs_infos;
+		private GLib.List<Json.Object?> pkgs;
+
+		public AURModel (Json.Array? pkgs_infos, ManagerWindow _manager_window) {
+			manager_window = _manager_window;
+			this.pkgs_infos = pkgs_infos;
+			pkgs = new GLib.List<Json.Object?> ();
+			if (pkgs_infos != null) {
+				pkgs_infos.foreach_element ((array, index, node) => {
+					pkgs.append (node.get_object ());
+				});
+			}
+		}
+
+		// TreeModel interface
+		public Type get_column_type (int index) {
+			switch (index) {
+				case 0: // name
+				case 2: // version
+					return typeof (string);
+				case 3: // votes
+					return typeof (int64);
+				case 1: // icon
+					return typeof (Gdk.Pixbuf);
+				default:
+					return Type.INVALID;
+			}
+		}
+
+		public Gtk.TreeModelFlags get_flags () {
+			return Gtk.TreeModelFlags.LIST_ONLY | Gtk.TreeModelFlags.ITERS_PERSIST;
+		}
+
+		public void get_value (Gtk.TreeIter iter, int column, out Value val) {
+			unowned Json.Object? pkg_info = pkgs.nth_data (iter.stamp);
+			switch (column) {
+				case 0:
+					val = Value (typeof (string));
+					if (pkg_info == null) {
+						val.set_string (dgettext (null, "No package found"));
+					} else {
+						val.set_string (pkg_info.get_string_member ("Name"));
+					}
+					break;
+				case 1:
+					val = Value (typeof (Object));
+					if (pkg_info != null) {
+						unowned Alpm.Package? pkg = manager_window.alpm_config.handle.localdb.get_pkg (pkg_info.get_string_member ("Name"));
+						if (pkg != null) {
+							if (manager_window.alpm_config.holdpkgs.find_custom (pkg.name, strcmp) != null) {
+								val.set_object (manager_window.locked_icon);
+							} else if (manager_window.transaction.to_add.contains (pkg.name)) {
+								val.set_object (manager_window.to_reinstall_icon);
+							} else if (manager_window.transaction.to_remove.contains (pkg.name)) {
+								val.set_object (manager_window.to_remove_icon);
+							} else {
+								val.set_object (manager_window.installed_icon);
+							}
+						} else if (manager_window.transaction.to_build.contains (pkg_info.get_string_member ("Name"))) {
+							val.set_object (manager_window.to_install_icon);
+						} else {
+							val.set_object (manager_window.uninstalled_icon);
+						}
+					}
+					break;
+				case 2:
+					val = Value (typeof (string));
+					if (pkg_info != null) {
+						unowned Alpm.Package? pkg = manager_window.alpm_config.handle.localdb.get_pkg (pkg_info.get_string_member ("Name"));
+						if (pkg != null) {
+							val.set_string (pkg.version);
+						} else {
+							val.set_string (pkg_info.get_string_member ("Version"));
+						}
+					}
+					break;
+				case 3:
+					if (pkg_info != null) {
+						val = Value (typeof (int64));
+						val.set_int64 (pkg_info.get_int_member ("NumVotes"));
+					} else {
+						// if pkg_info is null, set val to an empty string to not display "0"
+						val = Value (typeof (string));
+					}
+					break;
+				default:
+					val = Value (Type.INVALID);
+					break;
+			}
+		}
+
+		public bool get_iter (out Gtk.TreeIter iter, Gtk.TreePath path) {;
+			if (path.get_depth () != 1) {
+				return invalid_iter (out iter);
+			}
+			iter = Gtk.TreeIter ();
+			int pos = path.get_indices ()[0];
+			iter.stamp = pos;
+			return true;
+		}
+
+		public int get_n_columns () {
+			// name, icon, version, votes
+			return 4;
+		}
+
+		public Gtk.TreePath? get_path (Gtk.TreeIter iter) {
+			return new Gtk.TreePath.from_indices (iter.stamp);
+		}
+
+		public int iter_n_children (Gtk.TreeIter? iter) {
+			return 0;
+		}
+
+		public bool iter_next (ref Gtk.TreeIter iter) {
+			int pos = (iter.stamp) + 1;
+			if (pos >= pkgs.length ()) {
+				return false;
+			}
+			iter.stamp = pos;
+			return true;
+		}
+
+		public bool iter_previous (ref Gtk.TreeIter iter) {
+			int pos = iter.stamp;
+			if (pos >= 0) {
+				return false;
+			}
+			iter.stamp = (--pos);
+			return true;
+		}
+
+		public bool iter_nth_child (out Gtk.TreeIter iter, Gtk.TreeIter? parent, int n) {
+			return invalid_iter (out iter);
+		}
+
+		public bool iter_children (out Gtk.TreeIter iter, Gtk.TreeIter? parent) {
+			return invalid_iter (out iter);
+		}
+
+		public bool iter_has_child (Gtk.TreeIter iter) {
+			return false;
+		}
+
+		public bool iter_parent (out Gtk.TreeIter iter, Gtk.TreeIter child) {
+			return invalid_iter (out iter);
+		}
+
+		private bool invalid_iter (out Gtk.TreeIter iter) {
+			iter = Gtk.TreeIter ();
+			iter.stamp = -1;
+			return false;
+		}
+
+		// custom get pkg function
+		public unowned Json.Object? get_pkg_at_path (Gtk.TreePath path) {
+			return pkgs.nth_data (path.get_indices ()[0]);
+		}
+
+		public void sort_by_name (Gtk.SortType order) {
+			pkgs.sort ((GLib.CompareFunc) aur_compare_name);
+			if (order == Gtk.SortType.DESCENDING) {
+				pkgs.reverse ();
+			}
+			manager_window.aur_name_column.sort_order = order;
+			manager_window.aur_state_column.sort_indicator = false;
+			manager_window.aur_name_column.sort_indicator = true;
+			manager_window.aur_version_column.sort_indicator = false;
+			manager_window.aur_votes_column.sort_indicator = false;
+			manager_window.sortinfo.column_number = 0;
+			manager_window.sortinfo.sort_type = order;
+		}
+
+		public void sort_by_state (Gtk.SortType order) {
+			pkgs.sort ((GLib.CompareFunc) aur_compare_state);
+			if (order == Gtk.SortType.DESCENDING) {
+				pkgs.reverse ();
+			}
+			manager_window.aur_state_column.sort_order = order;
+			manager_window.aur_state_column.sort_indicator = true;
+			manager_window.aur_name_column.sort_indicator = false;
+			manager_window.aur_version_column.sort_indicator = false;
+			manager_window.aur_votes_column.sort_indicator = false;
+			manager_window.sortinfo.column_number = 1;
+			manager_window.sortinfo.sort_type = order;
+		}
+
+		public void sort_by_version (Gtk.SortType order) {
+			pkgs.sort ((GLib.CompareFunc) aur_compare_version);
+			if (order == Gtk.SortType.DESCENDING) {
+				pkgs.reverse ();
+			}
+			manager_window.aur_version_column.sort_order = order;
+			manager_window.aur_state_column.sort_indicator = false;
+			manager_window.aur_name_column.sort_indicator = false;
+			manager_window.aur_version_column.sort_indicator = true;
+			manager_window.aur_votes_column.sort_indicator = false;
+			manager_window.sortinfo.column_number = 2;
+			manager_window.sortinfo.sort_type = order;
+		}
+
+		public void sort_by_votes (Gtk.SortType order) {
+			pkgs.sort ((GLib.CompareFunc) aur_compare_votes);
+			if (order == Gtk.SortType.DESCENDING) {
+				pkgs.reverse ();
+			}
+			manager_window.aur_votes_column.sort_order = order;
+			manager_window.aur_state_column.sort_indicator = false;
+			manager_window.aur_name_column.sort_indicator = false;
+			manager_window.aur_version_column.sort_indicator = false;
+			manager_window.aur_votes_column.sort_indicator = true;
+			manager_window.sortinfo.column_number = 3;
+			manager_window.sortinfo.sort_type = order;
+		}
+	}
+}
diff --git a/src/choose_dep_dialog.vala b/src/choose_dep_dialog.vala
index 6f3a437..e900ffa 100644
--- a/src/choose_dep_dialog.vala
+++ b/src/choose_dep_dialog.vala
@@ -31,38 +31,20 @@ namespace Pamac {
 
 		public Gtk.ListStore deps_list;
 
-		Transaction transaction;
-
-		public ChooseDependenciesDialog (Transaction transaction, string pkgname, Gtk.ApplicationWindow? window) {
+		public ChooseDependenciesDialog (Gtk.ApplicationWindow? window) {
 			Object (transient_for: window, use_header_bar: 0);
 
-			this.transaction = transaction;
-
-			string[] optdeps = transaction.get_pkg_uninstalled_optdeps (pkgname);
-			label.set_markup ("<b>%s</b>".printf (
-				dngettext (null, "%s has %u uninstalled optional dependency.\nChoose if you would like to install it",
-						"%s has %u uninstalled optional dependencies.\nChoose those you would like to install", optdeps.length).printf (pkgname, optdeps.length)));
 			deps_list = new Gtk.ListStore (3, typeof (bool), typeof (string), typeof (string));
 			treeview.set_model (deps_list);
-			Gtk.TreeIter iter;
-			foreach (var optdep in optdeps) {
-				string[] split = optdep.split (":", 2);
-				deps_list.insert_with_values (out iter, -1,
-										0, false,
-										1, split[0],
-										2, split[1]);
-			}
 		}
 
 		[GtkCallback]
 		void on_renderertoggle_toggled (string path) {
 			Gtk.TreeIter iter;
-			GLib.Value val;
-			bool selected;
+			GLib.Value selected;
 			if (deps_list.get_iter_from_string (out iter, path)) {;
-				deps_list.get_value (iter, 0, out val);
-				selected = val.get_boolean ();
-				deps_list.set_value (iter, 0, !selected);
+				deps_list.get_value (iter, 0, out selected);
+				deps_list.set_value (iter, 0, !((bool) selected));
 			}
 		}
 	}
diff --git a/src/choose_ignorepkgs_dialog.vala b/src/choose_ignorepkgs_dialog.vala
index 108f79d..75d6b7d 100644
--- a/src/choose_ignorepkgs_dialog.vala
+++ b/src/choose_ignorepkgs_dialog.vala
@@ -31,39 +31,21 @@ namespace Pamac {
 
 		public Gtk.ListStore pkgs_list;
 
-		Transaction transaction;
-
-		public ChooseIgnorepkgsDialog (Gtk.Window window, Transaction transaction) {
+		public ChooseIgnorepkgsDialog (Gtk.Window window) {
 			Object (transient_for: window, use_header_bar: 0);
 
-			this.transaction = transaction;
-
 			label.set_markup ("<b>%s</b>".printf (dgettext (null, "Choose the packages you do not want to upgrade")));
 			pkgs_list = new Gtk.ListStore (2, typeof (bool), typeof (string));
 			treeview.set_model (pkgs_list);
-			transaction.get_installed_pkgs.begin ((obj, res) => {
-				Pamac.Package[] pkgs = transaction.get_installed_pkgs.end (res);
-				Gtk.TreeIter iter;
-				string[] already_ignorepkgs = transaction.get_ignorepkgs ();
-				foreach (var pkg in pkgs) {
-					if (pkg.name in already_ignorepkgs) {
-						pkgs_list.insert_with_values (out iter, -1, 0, true, 1, pkg.name);
-					} else {
-						pkgs_list.insert_with_values (out iter, -1, 0, false, 1, pkg.name);
-					}
-				}
-			});
 		}
 
 		[GtkCallback]
 		void on_renderertoggle_toggled (string path) {
 			Gtk.TreeIter iter;
-			GLib.Value val;
-			bool selected;
-			if (pkgs_list.get_iter_from_string (out iter, path)) {;
-				pkgs_list.get_value (iter, 0, out val);
-				selected = val.get_boolean ();
-				pkgs_list.set_value (iter, 0, !selected);
+			GLib.Value selected;
+			if (pkgs_list.get_iter_from_string (out iter, path)) {
+				pkgs_list.get_value (iter, 0, out selected);
+				pkgs_list.set_value (iter, 0, !((bool) selected));
 			}
 		}
 	}
diff --git a/src/choose_provider_dialog.vala b/src/choose_provider_dialog.vala
index 8b9dc74..a54ac56 100644
--- a/src/choose_provider_dialog.vala
+++ b/src/choose_provider_dialog.vala
@@ -27,14 +27,8 @@ namespace Pamac {
 		[GtkChild]
 		public Gtk.ComboBoxText comboboxtext;
 
-		public ChooseProviderDialog (string depend, string[] providers, Gtk.ApplicationWindow? window) {
+		public ChooseProviderDialog (Gtk.ApplicationWindow? window) {
 			Object (transient_for: window, use_header_bar: 0);
-
-			label.set_markup ("<b>%s</b>".printf (dgettext (null, "Choose a provider for %s").printf (depend)));
-			foreach (string provider in providers) {
-				comboboxtext.append_text (provider);
-			}
-			comboboxtext.active = 0;
 		}
 	}
 }
diff --git a/src/common.vala b/src/common.vala
index 5986ab1..ebc09b8 100644
--- a/src/common.vala
+++ b/src/common.vala
@@ -18,7 +18,7 @@
  */
 
 namespace Pamac {
-	public struct UpdateInfos {
+	public struct PackageInfos {
 		public string name;
 		public string version;
 		public string db_name;
@@ -27,13 +27,8 @@ namespace Pamac {
 
 	public struct Updates {
 		public bool is_syncfirst;
-		public UpdateInfos[] repos_updates;
-		public UpdateInfos[] aur_updates;
-		public Updates () {
-			is_syncfirst = false;
-			repos_updates = {};
-			aur_updates = {};
-		}
+		public PackageInfos[] repos_updates;
+		public PackageInfos[] aur_updates;
 	}
 
 	public struct ErrorInfos {
diff --git a/src/daemon.vala b/src/daemon.vala
index 4727b9c..960ad6e 100644
--- a/src/daemon.vala
+++ b/src/daemon.vala
@@ -17,9 +17,6 @@
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-using Alpm;
-using Polkit;
-
 // i18n
 const string GETTEXT_PACKAGE = "pamac";
 
@@ -27,46 +24,48 @@ Pamac.Daemon pamac_daemon;
 MainLoop loop;
 
 public delegate void AlpmActionDelegate ();
- 
-public class AlpmAction: Object {
-		unowned AlpmActionDelegate action_delegate;
-		public AlpmAction (AlpmActionDelegate action_delegate) {
-			this.action_delegate = action_delegate;
-		}
-		public void run () {
-			action_delegate ();
-		}
+
+[Compact]
+public class AlpmAction {
+	public unowned AlpmActionDelegate action_delegate;
+	public AlpmAction (AlpmActionDelegate action_delegate) {
+		this.action_delegate = action_delegate;
 	}
+	public void run () {
+		action_delegate ();
+	}
+}
 
 namespace Pamac {
 	[DBus (name = "org.manjaro.pamac")]
 	public class Daemon : Object {
 		private Alpm.Config alpm_config;
-		public uint64 previous_percent;
 		public Cond provider_cond;
 		public Mutex provider_mutex;
 		public int? choosen_provider;
-		private int force_refresh;
+		private bool force_refresh;
 		private ThreadPool<AlpmAction> thread_pool;
 		private Mutex databases_lock_mutex;
-		private HashTable<string, Json.Array> aur_search_results;
 		private Json.Array aur_updates_results;
 		private bool intern_lock;
 		private bool extern_lock;
 		private GLib.File lockfile;
+		private ErrorInfos current_error;
+		public Timer timer;
 
 		public signal void emit_event (uint primary_event, uint secondary_event, string[] details);
 		public signal void emit_providers (string depend, string[] providers);
-		public signal void emit_progress (uint progress, string pkgname, int percent, uint n_targets, uint current_target);
+		public signal void emit_progress (uint progress, string pkgname, uint percent, uint n_targets, uint current_target);
 		public signal void emit_download (string filename, uint64 xfered, uint64 total);
 		public signal void emit_totaldownload (uint64 total);
 		public signal void emit_log (uint level, string msg);
 		public signal void set_pkgreason_finished ();
-		public signal void refresh_finished (ErrorInfos error);
-		public signal void trans_prepare_finished (ErrorInfos error);
-		public signal void trans_commit_finished (ErrorInfos error);
+		public signal void refresh_finished (bool success);
+		public signal void get_updates_finished (Updates updates);
+		public signal void trans_prepare_finished (bool success);
+		public signal void trans_commit_finished (bool success);
 		public signal void get_authorization_finished (bool authorized);
-		public signal void write_pamac_config_finished (bool recurse, int refresh_period, bool no_update_hide_icon,
+		public signal void write_pamac_config_finished (bool recurse, uint64 refresh_period, bool no_update_hide_icon,
 														bool enable_aur, bool search_aur, bool check_aur_updates,
 														bool no_confirm_build);
 		public signal void write_alpm_config_finished (bool checkspace);
@@ -77,16 +76,34 @@ namespace Pamac {
 		public Daemon () {
 			alpm_config = new Alpm.Config ("/etc/pacman.conf");
 			databases_lock_mutex = Mutex ();
-			aur_search_results = new HashTable<string, Json.Array> (str_hash, str_equal);
 			aur_updates_results = new Json.Array ();
+			timer = new Timer ();
 			intern_lock = false;
 			extern_lock = false;
-			force_refresh = 0;
 			refresh_handle ();
 			Timeout.add (500, check_pacman_running);
 			create_thread_pool ();
 		}
 
+		public void set_environment_variables (HashTable<string,string> variables) {
+			string[] keys = { "HTTP_USER_AGENT",
+							"http_proxy",
+							"https_proxy",
+							"ftp_proxy",
+							"socks_proxy",
+							"no_proxy" };
+			foreach (unowned string key in keys) {
+				unowned string val;
+				if (variables.lookup_extended (key, null, out val)) {
+					Environment.set_variable (key, val, true);
+				}
+			}
+		}
+
+		public ErrorInfos get_current_error () {
+			return current_error;
+		}
+
 		private void create_thread_pool () {
 			// create a thread pool which will run alpm action one after one
 			try {
@@ -108,30 +125,31 @@ namespace Pamac {
 		private void refresh_handle () {
 			alpm_config.get_handle ();
 			if (alpm_config.handle == null) {
-				var err = ErrorInfos ();
-				err.message = _("Failed to initialize alpm library");
-				trans_commit_finished (err);
+				current_error = ErrorInfos () {
+					message = _("Failed to initialize alpm library"),
+					details = {}
+				};
+				trans_commit_finished (false);
 			} else {
-				alpm_config.handle.eventcb = (EventCallBack) cb_event;
-				alpm_config.handle.progresscb = (ProgressCallBack) cb_progress;
-				alpm_config.handle.questioncb = (QuestionCallBack) cb_question;
-				alpm_config.handle.dlcb = (DownloadCallBack) cb_download;
-				alpm_config.handle.totaldlcb = (TotalDownloadCallBack) cb_totaldownload;
-				alpm_config.handle.logcb = (LogCallBack) cb_log;
+				alpm_config.handle.eventcb = (Alpm.EventCallBack) cb_event;
+				alpm_config.handle.progresscb = (Alpm.ProgressCallBack) cb_progress;
+				alpm_config.handle.questioncb = (Alpm.QuestionCallBack) cb_question;
+				alpm_config.handle.dlcb = (Alpm.DownloadCallBack) cb_download;
+				alpm_config.handle.totaldlcb = (Alpm.TotalDownloadCallBack) cb_totaldownload;
+				alpm_config.handle.logcb = (Alpm.LogCallBack) cb_log;
 				lockfile = GLib.File.new_for_path (alpm_config.handle.lockfile);
 			}
-			previous_percent = 0;
 		}
 
 		private bool check_pacman_running () {
 			if (extern_lock) {
-				if (lockfile.query_exists () == false) {
+				if (!lockfile.query_exists ()) {
 					extern_lock = false;
 					refresh_handle ();
 				}
 			} else {
-				if (lockfile.query_exists () == true) {
-					if (intern_lock == false) {
+				if (lockfile.query_exists ()) {
+					if (!intern_lock) {
 						extern_lock = true;
 					}
 				}
@@ -161,10 +179,10 @@ namespace Pamac {
 						Idle.add ((owned) callback);
 					}
 				);
+				yield;
 			} catch (GLib.Error e) {
 				stderr.printf ("%s\n", e.message);
 			}
-			yield;
 			return authorized;
 		}
 
@@ -197,7 +215,7 @@ namespace Pamac {
 					alpm_config.reload ();
 					refresh_handle ();
 				}
-				write_alpm_config_finished (get_checkspace ());
+				write_alpm_config_finished ((alpm_config.checkspace == 1));
 			});
 		}
 
@@ -282,32 +300,48 @@ namespace Pamac {
 			});
 		}
 
+		public PackageInfos get_installed_pkg (string pkgname) {
+			unowned Alpm.Package? pkg = alpm_config.handle.localdb.get_pkg (pkgname);
+			if (pkg == null) {
+				return PackageInfos () {
+					name = "",
+					version = "",
+					db_name = "",
+					download_size = 0
+				};
+			}
+			return PackageInfos () {
+				name = pkg.name,
+				version = pkg.version,
+				db_name = pkg.db.name,
+				download_size = pkg.download_size
+			};
+		}
+
 		private void refresh () {
 			intern_lock = true;
-			var err = ErrorInfos ();
-			string[] details = {};
-			int success = 0;
-			int ret;
+			current_error = ErrorInfos ();
+			int force = (force_refresh) ? 1 : 0;
+			uint success = 0;
 			foreach (var db in alpm_config.handle.syncdbs) {
-				ret = db.update (force_refresh);
-				if (ret >= 0) {
+				if (db.update (force) >= 0) {
 					success++;
 				}
 			}
+			refresh_handle ();
 			// We should always succeed if at least one DB was upgraded - we may possibly
 			// fail later with unresolved deps, but that should be rare, and would be expected
 			if (success == 0) {
-				err.message = _("Failed to synchronize any databases");
-				details += Alpm.strerror (alpm_config.handle.errno ());
-				err.details = details;
+				current_error.message = _("Failed to synchronize any databases");
+				current_error.details = { Alpm.strerror (alpm_config.handle.errno ()) };
+				refresh_finished (false);
+			} else {
+				refresh_finished (true);
 			}
-			refresh_handle ();
-			refresh_finished (err);
-			force_refresh = 0;
 			intern_lock = false;
 		}
 
-		public void start_refresh (int force) {
+		public void start_refresh (bool force) {
 			force_refresh = force;
 			try {
 				thread_pool.add (new AlpmAction (refresh));
@@ -316,18 +350,6 @@ namespace Pamac {
 			}
 		}
 
-		public bool get_checkspace () {
-			return alpm_config.checkspace == 1 ? true : false;
-		}
-
-		public string[] get_ignorepkgs () {
-			string[] ignorepkgs = {};
-			for (size_t i = 0; i < alpm_config.ignorepkgs->length; i++) {
-				ignorepkgs += alpm_config.ignorepkgs->nth_data (i);
-			}
-			return ignorepkgs;
-		}
-
 		public void add_ignorepkg (string pkgname) {
 			alpm_config.handle.add_ignorepkg (pkgname);
 		}
@@ -336,338 +358,8 @@ namespace Pamac {
 			alpm_config.handle.remove_ignorepkg (pkgname);
 		}
 
-		public bool should_hold (string pkgname) {
-			if (alpm_config.holdpkgs.find_custom (pkgname, strcmp) != null) {
-				return true;
-			}
-			return false;
-		}
-
-		public async Pamac.Package[] get_all_pkgs () {
-			Pamac.Package[] pkgs = {};
-			var alpm_pkgs = all_pkgs (alpm_config.handle);
-			foreach (var alpm_pkg in alpm_pkgs) {
-				pkgs += Pamac.Package (alpm_pkg, null);
-			}
-			return pkgs;
-		}
-
-		public async Pamac.Package[] get_installed_pkgs () {
-			Pamac.Package[] pkgs = {};
-			foreach (var alpm_pkg in alpm_config.handle.localdb.pkgcache) {
-				pkgs += Pamac.Package (alpm_pkg, null);
-			}
-			return pkgs;
-		}
-
-		public async Pamac.Package[] get_local_pkgs () {
-			Pamac.Package[] pkgs = {};
-			foreach (var alpm_pkg in alpm_config.handle.localdb.pkgcache) {
-				bool sync_found = false;
-				foreach (var db in alpm_config.handle.syncdbs) {
-					unowned Alpm.Package? sync_pkg = db.get_pkg (alpm_pkg.name);
-					if (sync_pkg != null) {
-						sync_found = true;
-						break;
-					}
-				}
-				if (sync_found == false) {
-					pkgs += Pamac.Package (alpm_pkg, null);
-				}
-			}
-			return pkgs;
-		}
-
-		public async Pamac.Package[] get_orphans () {
-			Pamac.Package[] pkgs = {};
-			foreach (var alpm_pkg in alpm_config.handle.localdb.pkgcache) {
-				if (alpm_pkg.reason == Alpm.Package.Reason.DEPEND) {
-					Alpm.List<string?> *requiredby = alpm_pkg.compute_requiredby ();
-					if (requiredby->length == 0) {
-						Alpm.List<string?> *optionalfor = alpm_pkg.compute_optionalfor ();
-						if (optionalfor->length == 0) {
-							pkgs += Pamac.Package (alpm_pkg, null);
-						}
-						Alpm.List.free_all (optionalfor);
-					}
-					Alpm.List.free_all (requiredby);
-				}
-			}
-			return pkgs;
-		}
-
-		public Pamac.Package find_local_pkg (string pkgname) {
-			return Pamac.Package (alpm_config.handle.localdb.get_pkg (pkgname), null);
-		}
-
-		public Pamac.Package find_local_satisfier (string pkgname) {
-			return Pamac.Package (Alpm.find_satisfier (alpm_config.handle.localdb.pkgcache, pkgname), null);
-		}
-
-		private unowned Alpm.Package? get_syncpkg (string name) {
-			unowned Alpm.Package? pkg = null;
-			foreach (var db in alpm_config.handle.syncdbs) {
-				pkg = db.get_pkg (name);
-				if (pkg != null) {
-					break;
-				}
-			}
-			return pkg;
-		}
-
-		public Pamac.Package find_sync_pkg (string pkgname) {
-			return Pamac.Package (get_syncpkg (pkgname), null);
-		}
-
-		public async Pamac.Package[] search_pkgs (string search_string, bool search_aur) {
-			Pamac.Package[] result = {};
-			var needles = new Alpm.List<string> ();
-			string[] splitted = search_string.split (" ");
-			foreach (unowned string part in splitted) {
-				needles.add (part);
-			}
-			var alpm_pkgs = search_all_dbs (alpm_config.handle, needles);
-			foreach (var alpm_pkg in alpm_pkgs) {
-				result += Pamac.Package (alpm_pkg, null);
-			}
-			if (search_aur) {
-				Json.Array aur_pkgs;
-				if (aur_search_results.contains (search_string)) {
-					aur_pkgs = aur_search_results.get (search_string);
-				} else {
-					aur_pkgs = AUR.search (splitted);
-					aur_search_results.insert (search_string, aur_pkgs);
-				}
-				aur_pkgs.foreach_element ((array, index, node) => {
-					var aur_pkg = node.get_object ();
-					var pamac_pkg = Pamac.Package (null, aur_pkg);
-					bool found = false;
-					foreach (var pkg in result) {
-						if (pkg.name == pamac_pkg.name) {
-							found = true;
-							break;
-						}
-					}
-					if (found == false) {
-						result += pamac_pkg;
-					}
-				});
-			}
-			return result;
-		}
-
-		public string[] get_repos_names () {
-			string[] repos_names = {};
-			foreach (var db in alpm_config.handle.syncdbs) {
-				repos_names += db.name;
-			}
-			return repos_names;
-		}
-
-		public async Pamac.Package[] get_repo_pkgs (string repo) {
-			Pamac.Package[] pkgs = {};
-			unowned Alpm.Package? local_pkg = null;
-			foreach (var db in alpm_config.handle.syncdbs) {
-				if (db.name == repo) {
-					foreach (var sync_pkg in db.pkgcache) {
-						local_pkg = alpm_config.handle.localdb.get_pkg (sync_pkg.name);
-						if (local_pkg != null) {
-							pkgs += Pamac.Package (local_pkg, null);
-						} else {
-							pkgs += Pamac.Package (sync_pkg, null);
-						}
-					}
-				}
-			}
-			return pkgs;
-		}
-
-		public string[] get_groups_names () {
-			string[] groups_names = {};
-			foreach (var db in alpm_config.handle.syncdbs) {
-				foreach (var group in db.groupcache) {
-					if ((group.name in groups_names) == false) { 
-						groups_names += group.name;
-					}
-				}
-			}
-			return groups_names;
-		}
-
-		public async Pamac.Package[] get_group_pkgs (string groupname) {
-			Pamac.Package[] pkgs = {};
-			var alpm_pkgs = group_pkgs (alpm_config.handle, groupname);
-			foreach (var alpm_pkg in alpm_pkgs) {
-				pkgs += Pamac.Package (alpm_pkg, null);
-			}
-			return pkgs;
-		}
-
-		public string[] get_pkg_files (string pkgname) {
-			string[] files = {};
-			unowned Alpm.Package? alpm_pkg = alpm_config.handle.localdb.get_pkg (pkgname);
-			if (alpm_pkg != null) {
-				foreach (var file in alpm_pkg.files) {
-					files += file.name;
-				}
-			}
-			return files;
-		}
-
-		public string[] get_pkg_uninstalled_optdeps (string pkgname) {
-			string[] optdeps = {};
-			unowned Alpm.Package? alpm_pkg = alpm_config.handle.localdb.get_pkg (pkgname);
-			if (alpm_pkg == null) {
-				alpm_pkg = get_syncpkg (pkgname);
-			}
-			if (alpm_pkg != null) {
-				foreach (unowned Depend optdep in alpm_pkg.optdepends) {
-					if (Alpm.find_satisfier (alpm_config.handle.localdb.pkgcache, optdep.name) == null) {
-						optdeps += optdep.compute_string ();
-					}
-				}
-			}
-			return optdeps;
-		}
-
-		public PackageDetails get_pkg_details (string pkgname) {
-			string repo = "";
-			string has_signature = _("No");
-			int reason = 0;
-			string packager = "";
-			string build_date = "";
-			string install_date = "";
-			string[] groups = {};
-			string[] backups = {};
-			var details = PackageDetails ();
-			unowned Alpm.Package? alpm_pkg = alpm_config.handle.localdb.get_pkg (pkgname);
-			if (alpm_pkg == null) {
-				alpm_pkg = get_syncpkg (pkgname);
-			}
-			if (alpm_pkg == null) {
-				// search for the corresponding Json.Object in aur_search_result
-				var iter = HashTableIter<string, Json.Array> (aur_search_results);
-				unowned Json.Array array;
-				bool found = false;
-				while (iter.next (null, out array)) {
-					array.foreach_element((array, index, node) => {
-						var pkg_info = node.get_object ();
-						if (pkg_info.get_string_member ("Name") == pkgname) {
-							found = true;
-							repo = "AUR";
-							if (!pkg_info.get_null_member ("OutOfDate")) {
-								GLib.Time time = GLib.Time.local ((time_t) pkg_info.get_int_member ("OutOfDate"));
-								has_signature = time.format ("%a %d %b %Y %X %Z");
-							}
-							reason = (int) pkg_info.get_int_member ("NumVotes");
-							packager = pkg_info.get_string_member ("Maintainer") ?? "";
-							GLib.Time time = GLib.Time.local ((time_t) pkg_info.get_int_member ("FirstSubmitted"));
-							build_date = time.format ("%a %d %b %Y %X %Z");
-							time = GLib.Time.local ((time_t) pkg_info.get_int_member ("LastModified"));
-							install_date = time.format ("%a %d %b %Y %X %Z");
-						}
-					});
-					if (found) {
-						break;
-					}
-				}
-			} else {
-				packager = alpm_pkg.packager ?? "";
-				foreach (var group in alpm_pkg.groups) {
-					groups += group;
-				}
-				GLib.Time time = GLib.Time.local ((time_t) alpm_pkg.builddate);
-				build_date = time.format ("%a %d %b %Y %X %Z");
-				if (alpm_pkg.db != null) {
-					repo = alpm_pkg.db.name ?? "";
-					if (alpm_pkg.db.name == "local") {
-						reason = alpm_pkg.reason;
-						time = GLib.Time.local ((time_t) alpm_pkg.installdate);
-						install_date = time.format ("%a %d %b %Y %X %Z");
-						foreach (var backup in alpm_pkg.backups) {
-							backups += backup.name;
-						}
-					} else {
-						has_signature = alpm_pkg.base64_sig != null ? _("Yes") : _("No");
-					}
-				}
-			}
-			details.repo = repo;
-			details.has_signature = has_signature;
-			details.reason = reason;
-			details.packager = packager;
-			details.build_date = build_date;
-			details.install_date = install_date;
-			details.groups = groups;
-			details.backups = backups;
-			return details;
-		}
-
-		public PackageDeps get_pkg_deps (string pkgname) {
-			string repo = "";
-			string[] depends = {};
-			string[] optdepends = {};
-			string[] requiredby = {};
-			string[] optionalfor = {};
-			string[] provides = {};
-			string[] replaces = {};
-			string[] conflicts = {};
-			var deps = PackageDeps ();
-			unowned Alpm.Package? alpm_pkg = alpm_config.handle.localdb.get_pkg (pkgname);
-			if (alpm_pkg == null) {
-				alpm_pkg = get_syncpkg (pkgname);
-			}
-			if (alpm_pkg != null) {
-				repo = alpm_pkg.db.name;
-				foreach (var depend in alpm_pkg.depends) {
-					depends += depend.compute_string ();
-				}
-				foreach (var optdepend in alpm_pkg.optdepends) {
-					optdepends += optdepend.compute_string ();
-				}
-				foreach (var provide in alpm_pkg.provides) {
-					provides += provide.compute_string ();
-				}
-				foreach (var replace in alpm_pkg.replaces) {
-					replaces += replace.compute_string ();
-				}
-				foreach (var conflict in alpm_pkg.conflicts) {
-					conflicts += conflict.compute_string ();
-				}
-				if (alpm_pkg.db.name == "local") {
-					Alpm.List<string?> *list = alpm_pkg.compute_requiredby ();
-					int i = 0;
-					while (i < list->length) {
-						requiredby += list->nth_data (i);
-						i++;
-					}
-					Alpm.List.free_all (list);
-				}
-				if (alpm_pkg.db.name == "local") {
-					Alpm.List<string?> *list = alpm_pkg.compute_optionalfor ();
-					int i = 0;
-					while (i < list->length) {
-						optionalfor += list->nth_data (i);
-						i++;
-					}
-					Alpm.List.free_all (list);
-				}
-			}
-			deps.repo = repo;
-			deps.depends = depends;
-			deps.optdepends = optdepends;
-			deps.requiredby = requiredby;
-			deps.optionalfor = optionalfor;
-			deps.provides = provides;
-			deps.replaces = replaces;
-			deps.conflicts = conflicts;
-			return deps;
-		}
-
-		public async Updates get_updates (bool check_aur_updates) {
-			var infos = UpdateInfos ();
-			UpdateInfos[] updates_infos = {};
-			var updates = Updates ();
+		public void start_get_updates (bool check_aur_updates) {
+			PackageInfos[] updates_infos = {};
 			unowned Alpm.Package? pkg = null;
 			unowned Alpm.Package? candidate = null;
 			foreach (var name in alpm_config.syncfirsts) {
@@ -675,18 +367,24 @@ namespace Pamac {
 				if (pkg != null) {
 					candidate = pkg.sync_newversion (alpm_config.handle.syncdbs);
 					if (candidate != null) {
-						infos.name = candidate.name;
-						infos.version = candidate.version;
-						infos.db_name = candidate.db.name;
-						infos.download_size = candidate.download_size;
-						updates_infos += infos;
+						var infos = PackageInfos () {
+							name = candidate.name,
+							version = candidate.version,
+							db_name = candidate.db.name,
+							download_size = candidate.download_size
+						};
+						updates_infos += (owned) infos;
 					}
 				}
 			}
 			if (updates_infos.length != 0) {
-				updates.is_syncfirst = true;
-				updates.repos_updates = updates_infos;
-				return updates;
+				var updates = Updates () {
+					is_syncfirst = true,
+					repos_updates = (owned) updates_infos,
+					aur_updates = {}
+				};
+				get_updates_finished (updates);
+				return;
 			} else {
 				string[] local_pkgs = {};
 				foreach (var installed_pkg in alpm_config.handle.localdb.pkgcache) {
@@ -694,11 +392,13 @@ namespace Pamac {
 					if (alpm_config.handle.should_ignore (installed_pkg) == 0) {
 						candidate = installed_pkg.sync_newversion (alpm_config.handle.syncdbs);
 						if (candidate != null) {
-							infos.name = candidate.name;
-							infos.version = candidate.version;
-							infos.db_name = candidate.db.name;
-							infos.download_size = candidate.download_size;
-							updates_infos += infos;
+							var infos = PackageInfos () {
+								name = candidate.name,
+								version = candidate.version,
+								db_name = candidate.db.name,
+								download_size = candidate.download_size
+							};
+							updates_infos += (owned) infos;
 						} else {
 							if (check_aur_updates) {
 								// check if installed_pkg is a local pkg
@@ -715,89 +415,96 @@ namespace Pamac {
 						}
 					}
 				}
-				updates.repos_updates = updates_infos;
+				PackageInfos[] aur_updates_infos = {};
 				if (check_aur_updates) {
 					// get aur updates
 					if (aur_updates_results.get_length () == 0) {
 						aur_updates_results = AUR.multiinfo (local_pkgs);
 					}
-					updates_infos = {};
 					aur_updates_results.foreach_element ((array, index,node) => {
 						unowned Json.Object pkg_info = node.get_object ();
 						string version = pkg_info.get_string_member ("Version");
 						string name = pkg_info.get_string_member ("Name");
 						int cmp = Alpm.pkg_vercmp (version, alpm_config.handle.localdb.get_pkg (name).version);
 						if (cmp == 1) {
-							infos.name = name;
-							infos.version = version;
-							infos.db_name = "AUR";
-							infos.download_size = 0;
-							updates_infos += infos;
+							var infos = PackageInfos () {
+								name = name,
+								version = version,
+								db_name = "AUR",
+								download_size = 0
+							};
+							aur_updates_infos += (owned) infos;
 						}
 					});
-					updates.aur_updates = updates_infos;
 				}
-				return updates;
+				var updates = Updates () {
+					is_syncfirst = false,
+					repos_updates = (owned) updates_infos,
+					aur_updates = (owned) aur_updates_infos
+				};
+				get_updates_finished (updates);
 			}
 		}
 
-		public ErrorInfos trans_init (TransFlag transflags) {
-			var err = ErrorInfos ();
-			string[] details = {};
-			int ret = alpm_config.handle.trans_init (transflags);
-			if (ret == -1) {
-				err.message = _("Failed to init transaction");
-				details += Alpm.strerror (alpm_config.handle.errno ());
-				err.details = details;
+		public bool trans_init (Alpm.TransFlag transflags) {
+			current_error = ErrorInfos ();
+			if (alpm_config.handle.trans_init (transflags) == -1) {
+				current_error.message = _("Failed to init transaction");
+				current_error.details = { Alpm.strerror (alpm_config.handle.errno ()) };
+				return false;
 			} else {
 				intern_lock = true;
 			}
-			return err;
+			return true;
 		}
 
-		public ErrorInfos trans_sysupgrade (int enable_downgrade) {
-			var err = ErrorInfos ();
-			string[] details = {};
-			int ret = alpm_config.handle.trans_sysupgrade (enable_downgrade);
-			if (ret == -1) {
-				err.message = _("Failed to prepare transaction");
-				details += Alpm.strerror (alpm_config.handle.errno ());
-				err.details = details;
+		public bool trans_sysupgrade (bool enable_downgrade) {
+			current_error = ErrorInfos ();
+			if (alpm_config.handle.trans_sysupgrade ((enable_downgrade) ? 1 : 0) == -1) {
+				current_error.message = _("Failed to prepare transaction");
+				current_error.details = { Alpm.strerror (alpm_config.handle.errno ()) };
+				return false;
 			}
-			return err;
+			return true;
 		}
 
-		private ErrorInfos trans_add_pkg_real (Alpm.Package pkg) {
-			var err = ErrorInfos ();
-			string[] details = {};
-			int ret = alpm_config.handle.trans_add_pkg (pkg);
-			if (ret == -1) {
+		private bool trans_add_pkg_real (Alpm.Package pkg) {
+			current_error = ErrorInfos ();
+			if (alpm_config.handle.trans_add_pkg (pkg) == -1) {
 				Alpm.Errno errno = alpm_config.handle.errno ();
-				if (errno == Errno.TRANS_DUP_TARGET || errno == Errno.PKG_IGNORED) {
+				if (errno == Alpm.Errno.TRANS_DUP_TARGET || errno == Alpm.Errno.PKG_IGNORED) {
 					// just skip duplicate or ignored targets
-					return err;
+					return true;
 				} else {
-					err.message = _("Failed to prepare transaction");
-					details += "%s: %s".printf (pkg.name, Alpm.strerror (errno));
-					err.details = details;
-					return err;
+					current_error.message = _("Failed to prepare transaction");
+					current_error.details = { "%s: %s".printf (pkg.name, Alpm.strerror (errno)) };
+					return false;
 				}
 			}
-			return err;
+			return true;
 		}
 
-		public ErrorInfos trans_add_pkg (string pkgname) {
-			var err = ErrorInfos ();
-			string[] details = {};
-			unowned Alpm.Package? pkg = get_syncpkg (pkgname);
+		private unowned Alpm.Package? get_sync_pkg (string pkgname) {
+			unowned Alpm.Package? pkg = null;
+			foreach (var db in alpm_config.handle.syncdbs) {
+				pkg = db.get_pkg (pkgname);
+				if (pkg != null) {
+					break;
+				}
+			}
+			return pkg;
+		}
+
+		public bool trans_add_pkg (string pkgname) {
+			current_error = ErrorInfos ();
+			unowned Alpm.Package? pkg = get_sync_pkg (pkgname);
 			if (pkg == null) {
-				err.message = _("Failed to prepare transaction");
-				details += _("target not found: %s").printf (pkgname);
-				err.details = details;
-				return err;
+				current_error.message = _("Failed to prepare transaction");
+				current_error.details = { _("target not found: %s").printf (pkgname) };
+				return false;
 			} else {
-				err = trans_add_pkg_real (pkg);
-				if (err.message == "") {
+				bool success = trans_add_pkg_real (pkg);
+				if (success) {
 					if (("linux31" in pkg.name) || ("linux4" in pkg.name)) {
 						string[] installed_kernels = {};
 						string[] installed_modules = {};
@@ -818,9 +525,9 @@ namespace Pamac {
 						if (splitted.length == 2) {
 							// we are adding a module
 							// add the same module for other installed kernels
-							foreach (var installed_kernel in installed_kernels) {
+							foreach (unowned string installed_kernel in installed_kernels) {
 								string module = installed_kernel + "-" + splitted[1];
-								unowned Alpm.Package? module_pkg = get_syncpkg (module);
+								unowned Alpm.Package? module_pkg = get_sync_pkg (module);
 								if (module_pkg != null) {
 									trans_add_pkg_real (module_pkg);
 								}
@@ -828,9 +535,9 @@ namespace Pamac {
 						} else if (splitted.length == 1) {
 							// we are adding a kernel
 							// add all installed modules for other kernels
-							foreach (var installed_module in installed_modules) {
+							foreach (unowned string installed_module in installed_modules) {
 								string module = splitted[0] + "-" + installed_module;
-								unowned Alpm.Package? module_pkg = get_syncpkg (module);
+								unowned Alpm.Package? module_pkg = get_sync_pkg (module);
 								if (module_pkg != null) {
 									trans_add_pkg_real (module_pkg);
 								}
@@ -838,107 +545,90 @@ namespace Pamac {
 						}
 					}
 				}
-				return err;
+				return success;
 			}
 		}
 
-		public ErrorInfos trans_load_pkg (string pkgpath) {
-			var err = ErrorInfos ();
-			string[] details = {};
+		public bool trans_load_pkg (string pkgpath) {
+			current_error = ErrorInfos ();
 			Alpm.Package* pkg = alpm_config.handle.load_file (pkgpath, 1, alpm_config.handle.localfilesiglevel);
 			if (pkg == null) {
-				err.message = _("Failed to prepare transaction");
-				details += "%s: %s".printf (pkgpath, Alpm.strerror (alpm_config.handle.errno ()));
-				err.details = details;
-				return err;
-			} else {
-				int ret = alpm_config.handle.trans_add_pkg (pkg);
-				if (ret == -1) {
-					Alpm.Errno errno = alpm_config.handle.errno ();
-					if (errno == Errno.TRANS_DUP_TARGET || errno == Errno.PKG_IGNORED) {
-						// just skip duplicate or ignored targets
-						return err;
-					 } else {
-						err.message = _("Failed to prepare transaction");
-						details += "%s: %s".printf (pkg->name, Alpm.strerror (errno));
-						err.details = details;
-						// free the package because it will not be used
-						delete pkg;
-						return err;
-					}
-				}
+				current_error.message = _("Failed to prepare transaction");
+				current_error.details = { "%s: %s".printf (pkgpath, Alpm.strerror (alpm_config.handle.errno ())) };
+				return false;
+			} else if (alpm_config.handle.trans_add_pkg (pkg) == -1) {
+				current_error.message = _("Failed to prepare transaction");
+				current_error.details = { "%s: %s".printf (pkg->name, Alpm.strerror (alpm_config.handle.errno ())) };
+				// free the package because it will not be used
+				delete pkg;
+				return false;
 			}
-			return err;
+			return true;
 		}
 
-		public ErrorInfos trans_remove_pkg (string pkgname) {
-			var err = ErrorInfos ();
-			string[] details = {};
+		public bool trans_remove_pkg (string pkgname) {
+			current_error = ErrorInfos ();
 			unowned Alpm.Package? pkg =  alpm_config.handle.localdb.get_pkg (pkgname);
 			if (pkg == null) {
-				err.message = _("Failed to prepare transaction");
-				details += _("target not found: %s").printf (pkgname);
-				err.details = details;
-				return err;
+				current_error.message = _("Failed to prepare transaction");
+				current_error.details = { _("target not found: %s").printf (pkgname) };
+				return false;
+			} else if (alpm_config.handle.trans_remove_pkg (pkg) == -1) {
+				current_error.message = _("Failed to prepare transaction");
+				current_error.details = { "%s: %s".printf (pkg.name, Alpm.strerror (alpm_config.handle.errno ())) };
+				return false;
 			}
-			int ret = alpm_config.handle.trans_remove_pkg (pkg);
-			if (ret == -1) {
-				err.message = _("Failed to prepare transaction");
-				details += "%s: %s".printf (pkg.name, Alpm.strerror (alpm_config.handle.errno ()));
-				err.details = details;
-			}
-			return err;
+			return true;
 		}
 
 		private void trans_prepare () {
-			var err = ErrorInfos ();
+			current_error = ErrorInfos ();
 			string[] details = {};
-			Alpm.List<void*> err_data = null;
-			int ret = alpm_config.handle.trans_prepare (out err_data);
-			if (ret == -1) {
+			Alpm.List<void*> err_data;
+			if (alpm_config.handle.trans_prepare (out err_data) == -1) {
 				Alpm.Errno errno = alpm_config.handle.errno ();
-				err.message = _("Failed to prepare transaction");
+				current_error.message = _("Failed to prepare transaction");
 				string detail = Alpm.strerror (errno);
 				switch (errno) {
-					case Errno.PKG_INVALID_ARCH:
+					case Alpm.Errno.PKG_INVALID_ARCH:
 						detail += ":";
-						details += detail;
-						foreach (void *i in err_data) {
-							string *pkgname = i;
+						details += (owned) detail;
+						foreach (void* i in err_data) {
+							string* pkgname = i;
 							details += _("package %s does not have a valid architecture").printf (pkgname);
 							delete pkgname;
 						}
 						break;
-					case Errno.UNSATISFIED_DEPS:
+					case Alpm.Errno.UNSATISFIED_DEPS:
 						detail += ":";
-						details += detail;
-						foreach (void *i in err_data) {
-							DepMissing *miss = i;
-							string depstring = miss->depend.compute_string ();
-							details += _("%s: requires %s").printf (miss->target, depstring);
+						details += (owned) detail;
+						foreach (void* i in err_data) {
+							Alpm.DepMissing* miss = i;
+							details += _("%s: requires %s").printf (miss->target, miss->depend.compute_string ());
 							delete miss;
 						}
 						break;
-					case Errno.CONFLICTING_DEPS:
+					case Alpm.Errno.CONFLICTING_DEPS:
 						detail += ":";
-						details += detail;
-						foreach (void *i in err_data) {
-							Conflict *conflict = i;
-							detail = _("%s and %s are in conflict").printf (conflict->package1, conflict->package2);
+						details += (owned) detail;
+						foreach (void* i in err_data) {
+							Alpm.Conflict* conflict = i;
+							string conflict_detail = _("%s and %s are in conflict").printf (conflict->package1, conflict->package2);
 							// only print reason if it contains new information
-							if (conflict->reason.mod != Depend.Mode.ANY) {
-								detail += " (%s)".printf (conflict->reason.compute_string ());
+							if (conflict->reason.mod != Alpm.Depend.Mode.ANY) {
+								conflict_detail += " (%s)".printf (conflict->reason.compute_string ());
 							}
-							details += detail;
+							details += (owned) conflict_detail;
 							delete conflict;
 						}
 						break;
 					default:
-						details += detail;
+						details += (owned) detail;
 						break;
 				}
-				err.details = details;
+				current_error.details = (owned) details;
 				trans_release ();
+				trans_prepare_finished (false);
 			} else {
 				// Search for holdpkg in target list
 				bool found_locked_pkg = false;
@@ -950,12 +640,14 @@ namespace Pamac {
 					}
 				}
 				if (found_locked_pkg) {
-					err.message = _("Failed to prepare transaction");
-					err.details = details;
+					current_error.message = _("Failed to prepare transaction");
+					current_error.details = (owned) details;
 					trans_release ();
+					trans_prepare_finished (false);
+				} else {
+					trans_prepare_finished (true);
 				}
 			}
-			trans_prepare_finished (err);
 		}
 
 		public void start_trans_prepare () {
@@ -973,61 +665,59 @@ namespace Pamac {
 			provider_mutex.unlock ();
 		}
 
-		public UpdateInfos[] trans_to_add () {
-			UpdateInfos info = UpdateInfos ();
-			UpdateInfos[] infos = {};
+		public PackageInfos[] trans_to_add () {
+			PackageInfos[] to_add = {};
 			foreach (var pkg in alpm_config.handle.trans_to_add ()) {
-				info.name = pkg.name;
-				info.version = pkg.version;
-				// if pkg was load from a file, pkg.db is null
-				if (pkg.db != null) {
-					info.db_name = pkg.db.name;
-				} else {
-					info.db_name = "";
-				}
-				info.download_size = pkg.download_size;
-				infos += info;
+				var infos = PackageInfos () {
+					name = pkg.name,
+					version = pkg.version,
+					// if pkg was load from a file, pkg.db is null
+					db_name = pkg.db != null ? pkg.db.name : "",
+					download_size = pkg.download_size
+				};
+				to_add += (owned) infos;
 			}
-			return infos;
+			return to_add;
 		}
 
-		public UpdateInfos[] trans_to_remove () {
-			UpdateInfos info = UpdateInfos ();
-			UpdateInfos[] infos = {};
+		public PackageInfos[] trans_to_remove () {
+			PackageInfos[] to_remove = {};
 			foreach (var pkg in alpm_config.handle.trans_to_remove ()) {
-				info.name = pkg.name;
-				info.version = pkg.version;
-				info.db_name = pkg.db.name;
-				info.download_size = pkg.download_size;
-				infos += info;
+				var infos = PackageInfos () {
+					name = pkg.name,
+					version = pkg.version,
+					db_name = pkg.db.name,
+					download_size = pkg.download_size
+				};
+				to_remove += (owned) infos;
 			}
-			return infos;
+			return to_remove;
 		}
 
 		private void trans_commit () {
-			var err = ErrorInfos ();
-			string[] details = {};
-			Alpm.List<void*> err_data = null;
-			int ret = alpm_config.handle.trans_commit (out err_data);
-			if (ret == -1) {
+			current_error = ErrorInfos ();
+			bool success = true;
+			Alpm.List<void*> err_data;
+			if (alpm_config.handle.trans_commit (out err_data) == -1) {
 				Alpm.Errno errno = alpm_config.handle.errno ();
-				err.message = _("Failed to commit transaction");
+				current_error.message = _("Failed to commit transaction");
 				string detail = Alpm.strerror (errno);
+				string[] details = {};
 				switch (errno) {
 					case Alpm.Errno.FILE_CONFLICTS:
 						detail += ":";
-						details += detail;
+						details += (owned) detail;
 						//TransFlag flags = alpm_config.handle.trans_get_flags ();
 						//if ((flags & TransFlag.FORCE) != 0) {
 							//details += _("unable to %s directory-file conflicts").printf ("--force");
 						//}
-						foreach (void *i in err_data) {
-							FileConflict *conflict = i;
+						foreach (void* i in err_data) {
+							Alpm.FileConflict* conflict = i;
 							switch (conflict->type) {
-								case FileConflict.Type.TARGET:
+								case Alpm.FileConflict.Type.TARGET:
 									details += _("%s exists in both %s and %s").printf (conflict->file, conflict->target, conflict->ctarget);
 									break;
-								case FileConflict.Type.FILESYSTEM:
+								case Alpm.FileConflict.Type.FILESYSTEM:
 									details += _("%s: %s already exists in filesystem").printf (conflict->target, conflict->file);
 									break;
 							}
@@ -1039,23 +729,23 @@ namespace Pamac {
 					case Alpm.Errno.PKG_INVALID_SIG:
 					case Alpm.Errno.DLT_INVALID:
 						detail += ":";
-						details += detail;
-						foreach (void *i in err_data) {
-							string *filename = i;
+						details += (owned) detail;
+						foreach (void* i in err_data) {
+							string* filename = i;
 							details += _("%s is invalid or corrupted").printf (filename);
 							delete filename;
 						}
 						break;
 					default:
-						details += detail;
+						details += (owned) detail;
 						break;
 				}
-				err.details = details;
+				current_error.details = (owned) details;
+				success = false;
 			}
 			trans_release ();
 			refresh_handle ();
-			trans_commit_finished (err);
-			intern_lock = false;
+			trans_commit_finished (success);
 		}
 
 		public void start_trans_commit (GLib.BusName sender) {
@@ -1068,31 +758,35 @@ namespace Pamac {
 						stderr.printf ("Thread Error %s\n", e.message);
 					}
 				} else {
-					var err = ErrorInfos ();
-					err.message = _("Authentication failed");
+					current_error = ErrorInfos () {
+						message = _("Authentication failed"),
+						details = {}
+					};
 					trans_release ();
 					refresh_handle ();
-					trans_commit_finished (err);
-					intern_lock = false;
+					trans_commit_finished (false);
 				}
 			});
 		}
 
-		public int trans_release () {
-			return alpm_config.handle.trans_release ();
+		public void trans_release () {
+			alpm_config.handle.trans_release ();
+			intern_lock = false;
 		}
 
+		[DBus (no_reply = true)]
 		public void trans_cancel () {
 			if (alpm_config.handle.trans_interrupt () == 0) {
 				// a transaction is being interrupted
 				// it will end the normal way
 				return;
 			}
-			var err = ErrorInfos ();
-			trans_release ();
-			refresh_handle ();
-			trans_commit_finished (err);
+			Posix.raise (Posix.SIGINT);
+			current_error = ErrorInfos ();
+			trans_commit_finished (false);
+			alpm_config.handle.unlock ();
 			intern_lock = false;
+			refresh_handle ();
 		}
 
 		[DBus (no_reply = true)]
@@ -1101,6 +795,7 @@ namespace Pamac {
 			// the above function will wait for all task in queue
 			// to be processed before return; 
 			ThreadPool.free ((owned) thread_pool, false, true);
+			alpm_config.handle.unlock ();
 			loop.quit ();
 		}
 	// End of Daemon Object
@@ -1121,11 +816,29 @@ private void write_log_file (string event) {
 	}
 }
 
-private void cb_event (Event.Data data) {
+private void cb_event (Alpm.Event.Data data) {
 	string[] details = {};
 	uint secondary_type = 0;
 	switch (data.type) {
-		case Event.Type.PACKAGE_OPERATION_START:
+		case Alpm.Event.Type.HOOK_START:
+			switch (data.hook_when) {
+				case Alpm.HookWhen.PRE_TRANSACTION:
+					secondary_type = (uint) Alpm.HookWhen.PRE_TRANSACTION;
+					break;
+				case Alpm.HookWhen.POST_TRANSACTION:
+					secondary_type = (uint) Alpm.HookWhen.POST_TRANSACTION;
+					break;
+				default:
+					break;
+			}
+			break;
+		case Alpm.Event.Type.HOOK_RUN_START:
+			details += data.hook_run_name;
+			details += data.hook_run_desc;
+			details += data.hook_run_position.to_string ();
+			details += data.hook_run_total.to_string ();
+		break;
+		case Alpm.Event.Type.PACKAGE_OPERATION_START:
 			switch (data.package_operation_operation) {
 				case Alpm.Package.Operation.REMOVE:
 					details += data.package_operation_oldpkg.name;
@@ -1154,9 +867,11 @@ private void cb_event (Event.Data data) {
 					details += data.package_operation_newpkg.version;
 					secondary_type = (uint) Alpm.Package.Operation.DOWNGRADE;
 					break;
+				default:
+					break;
 			}
 			break;
-		case Event.Type.PACKAGE_OPERATION_DONE:
+		case Alpm.Event.Type.PACKAGE_OPERATION_DONE:
 			switch (data.package_operation_operation) {
 				case Alpm.Package.Operation.INSTALL:
 					string log = "Installed %s (%s)\n".printf (data.package_operation_newpkg.name, data.package_operation_newpkg.version);
@@ -1180,58 +895,55 @@ private void cb_event (Event.Data data) {
 					break;
 			}
 			break;
-		case Event.Type.DELTA_PATCH_START:
+		case Alpm.Event.Type.DELTA_PATCH_START:
 			details += data.delta_patch_delta.to;
 			details += data.delta_patch_delta.delta;
 			break;
-		case Event.Type.SCRIPTLET_INFO:
+		case Alpm.Event.Type.SCRIPTLET_INFO:
 			details += data.scriptlet_info_line;
 			write_log_file (data.scriptlet_info_line);
 			break;
-		case Event.Type.PKGDOWNLOAD_START:
+		case Alpm.Event.Type.PKGDOWNLOAD_START:
 			details += data.pkgdownload_file;
 			break;
-		case Event.Type.OPTDEP_REMOVAL:
+		case Alpm.Event.Type.OPTDEP_REMOVAL:
 			details += data.optdep_removal_pkg.name;
 			details += data.optdep_removal_optdep.compute_string ();
 			break;
-		case Event.Type.DATABASE_MISSING:
+		case Alpm.Event.Type.DATABASE_MISSING:
 			details += data.database_missing_dbname;
 			break;
-		case Event.Type.PACNEW_CREATED:
+		case Alpm.Event.Type.PACNEW_CREATED:
 			details += data.pacnew_created_file;
 			break;
-		case Event.Type.PACSAVE_CREATED:
+		case Alpm.Event.Type.PACSAVE_CREATED:
 			details += data.pacsave_created_file;
 			break;
-		case Event.Type.PACORIG_CREATED:
-			details += data.pacorig_created_file;
-			break;
 		default:
 			break;
 	}
 	pamac_daemon.emit_event ((uint) data.type, secondary_type, details);
 }
 
-private void cb_question (Question.Data data) {
+private void cb_question (Alpm.Question.Data data) {
 	switch (data.type) {
-		case Question.Type.INSTALL_IGNOREPKG:
+		case Alpm.Question.Type.INSTALL_IGNOREPKG:
 			// Do not install package in IgnorePkg/IgnoreGroup
 			data.install_ignorepkg_install = 0;
 			break;
-		case Question.Type.REPLACE_PKG:
+		case Alpm.Question.Type.REPLACE_PKG:
 			// Auto-remove conflicts in case of replaces
 			data.replace_replace = 1;
 			break;
-		case Question.Type.CONFLICT_PKG:
+		case Alpm.Question.Type.CONFLICT_PKG:
 			// Auto-remove conflicts
 			data.conflict_remove = 1;
 			break;
-		case Question.Type.REMOVE_PKGS:
+		case Alpm.Question.Type.REMOVE_PKGS:
 			// Do not upgrade packages which have unresolvable dependencies
 			data.remove_pkgs_skip = 1;
 			break;
-		case Question.Type.SELECT_PROVIDER:
+		case Alpm.Question.Type.SELECT_PROVIDER:
 			string depend_str = data.select_provider_depend.compute_string ();
 			string[] providers_str = {};
 			foreach (unowned Alpm.Package pkg in data.select_provider_providers) {
@@ -1248,11 +960,11 @@ private void cb_question (Question.Data data) {
 			data.select_provider_use_index = pamac_daemon.choosen_provider;
 			pamac_daemon.provider_mutex.unlock ();
 			break;
-		case Question.Type.CORRUPTED_PKG:
+		case Alpm.Question.Type.CORRUPTED_PKG:
 			// Auto-remove corrupted pkgs in cache
 			data.corrupted_remove = 1;
 			break;
-		case Question.Type.IMPORT_KEY:
+		case Alpm.Question.Type.IMPORT_KEY:
 			if (data.import_key_key.revoked == 1) {
 				// Do not get revoked key
 				data.import_key_import = 0;
@@ -1267,17 +979,33 @@ private void cb_question (Question.Data data) {
 	}
 }
 
-private void cb_progress (Progress progress, string pkgname, int percent, uint n_targets, uint current_target) {
-	if ((uint64) percent != pamac_daemon.previous_percent) {
-		pamac_daemon.previous_percent = (uint64) percent;
-		pamac_daemon.emit_progress ((uint) progress, pkgname, percent, n_targets, current_target);
+private void cb_progress (Alpm.Progress progress, string pkgname, int percent, uint n_targets, uint current_target) {
+	if (percent == 0) {
+		pamac_daemon.emit_progress ((uint) progress, pkgname, (uint) percent, n_targets, current_target);
+		pamac_daemon.timer.start ();
+	} else if (percent == 100) {
+		pamac_daemon.emit_progress ((uint) progress, pkgname, (uint) percent, n_targets, current_target);
+		pamac_daemon.timer.stop ();
+	}else if (pamac_daemon.timer.elapsed () < 0.5) {
+		return;
+	} else {
+		pamac_daemon.emit_progress ((uint) progress, pkgname, (uint) percent, n_targets, current_target);
+		pamac_daemon.timer.start ();
 	}
 }
 
 private void cb_download (string filename, uint64 xfered, uint64 total) {
-	if (xfered != pamac_daemon.previous_percent) {
-		pamac_daemon.previous_percent = xfered;
+	if (xfered == 0) {
 		pamac_daemon.emit_download (filename, xfered, total);
+		pamac_daemon.timer.start ();
+	} else if (xfered == total) {
+		pamac_daemon.emit_download (filename, xfered, total);
+		pamac_daemon.timer.stop ();
+	} else if (pamac_daemon.timer.elapsed () < 0.5) {
+		return;
+	} else {
+		pamac_daemon.emit_download (filename, xfered, total);
+		pamac_daemon.timer.start ();
 	}
 }
 
@@ -1285,8 +1013,8 @@ private void cb_totaldownload (uint64 total) {
 	pamac_daemon.emit_totaldownload (total);
 }
 
-private void cb_log (LogLevel level, string fmt, va_list args) {
-	LogLevel logmask = LogLevel.ERROR | LogLevel.WARNING;
+private void cb_log (Alpm.LogLevel level, string fmt, va_list args) {
+	Alpm.LogLevel logmask = Alpm.LogLevel.ERROR | Alpm.LogLevel.WARNING;
 	if ((level & logmask) == 0) {
 		return;
 	}
@@ -1313,7 +1041,9 @@ void main () {
 	Intl.setlocale (LocaleCategory.ALL, "");
 	Intl.textdomain (GETTEXT_PACKAGE);
 
-	Bus.own_name (BusType.SYSTEM, "org.manjaro.pamac", BusNameOwnerFlags.NONE,
+	Bus.own_name (BusType.SYSTEM,
+				"org.manjaro.pamac",
+				BusNameOwnerFlags.NONE,
 				on_bus_acquired,
 				null,
 				() => {
diff --git a/src/installer.vala b/src/installer.vala
index 9fe37da..0cd62ce 100644
--- a/src/installer.vala
+++ b/src/installer.vala
@@ -46,13 +46,13 @@ namespace Pamac {
 				transaction_info_dialog.hide ();
 			} else {
 				transaction = new Pamac.Transaction (null);
-				transaction.finished.connect (on_emit_trans_finished);
+				transaction.finished.connect (on_transaction_finished);
 				this.hold ();
 			}
 		}
 
 		public override void activate () {
-			if (pamac_run == false) {
+			if (!pamac_run) {
 				print ("\nError: Path(s) of tarball(s) to install is needed\n");
 				transaction.stop_daemon ();
 				this.release ();
@@ -60,10 +60,9 @@ namespace Pamac {
 		}
 
 		public override void open (File[] files, string hint) {
-			if (pamac_run == false) {
-				foreach (File file in files) {
-					string? path = file.get_path ();
-					transaction.to_load.add ((owned) path);
+			if (!pamac_run) {
+				foreach (unowned File file in files) {
+					transaction.to_load.add (file.get_path ());
 				}
 				transaction.run ();
 			}
@@ -92,7 +91,7 @@ namespace Pamac {
 			return run;
 		}
 
-		public void on_emit_trans_finished (bool error) {
+		public void on_transaction_finished () {
 			transaction.stop_daemon ();
 			this.release ();
 		}
diff --git a/src/manager.vala b/src/manager.vala
index 8870e06..dd0cc13 100644
--- a/src/manager.vala
+++ b/src/manager.vala
@@ -50,18 +50,17 @@ namespace Pamac {
 		}
 
 		public override void activate () {
-			if (pamac_run == false) {
+			if (!pamac_run) {
 				manager_window.present ();
 				while (Gtk.events_pending ()) {
 					Gtk.main_iteration ();
 				}
-				manager_window.show_all_pkgs ();
 			}
 		}
 
 		public override void shutdown () {
 			base.shutdown ();
-			if (pamac_run == false) {
+			if (!pamac_run) {
 				manager_window.transaction.stop_daemon ();
 			}
 		}
diff --git a/src/manager_window.vala b/src/manager_window.vala
index d17cf63..989c7dd 100644
--- a/src/manager_window.vala
+++ b/src/manager_window.vala
@@ -1,7 +1,7 @@
 /*
  *  pamac-vala
  *
- *  Copyright (C) 2014-2015 Guillaume Benoit <guillaume@manjaro.org>
+ *  Copyright (C) 2014-2016 Guillaume Benoit <guillaume@manjaro.org>
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -17,11 +17,6 @@
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-using Gtk;
-using Alpm;
-
-const string VERSION = "2.4.3";
-
 namespace Pamac {
 
 	public struct SortInfo {
@@ -43,15 +38,27 @@ namespace Pamac {
 		[GtkChild]
 		public Gtk.TreeView packages_treeview;
 		[GtkChild]
-		public Gtk.TreeViewColumn state_column;
+		public Gtk.TreeViewColumn packages_state_column;
 		[GtkChild]
-		public Gtk.TreeViewColumn name_column;
+		public Gtk.TreeViewColumn packages_name_column;
 		[GtkChild]
-		public Gtk.TreeViewColumn version_column;
+		public Gtk.TreeViewColumn packages_version_column;
 		[GtkChild]
-		public Gtk.TreeViewColumn repo_column;
+		public Gtk.TreeViewColumn packages_repo_column;
 		[GtkChild]
-		public Gtk.TreeViewColumn size_column;
+		public Gtk.TreeViewColumn packages_size_column;
+		[GtkChild]
+		public Gtk.TreeView aur_treeview;
+		[GtkChild]
+		public Gtk.ScrolledWindow aur_scrolledwindow;
+		[GtkChild]
+		public Gtk.TreeViewColumn aur_state_column;
+		[GtkChild]
+		public Gtk.TreeViewColumn aur_name_column;
+		[GtkChild]
+		public Gtk.TreeViewColumn aur_version_column;
+		[GtkChild]
+		public Gtk.TreeViewColumn aur_votes_column;
 		[GtkChild]
 		public Gtk.Notebook filters_notebook;
 		[GtkChild]
@@ -65,6 +72,8 @@ namespace Pamac {
 		[GtkChild]
 		public Gtk.TreeView repos_treeview;
 		[GtkChild]
+		public Gtk.Notebook packages_notebook;
+		[GtkChild]
 		public Gtk.Notebook properties_notebook;
 		[GtkChild]
 		public Gtk.TreeView deps_treeview;
@@ -100,11 +109,11 @@ namespace Pamac {
 		Gtk.MenuItem deselect_item;
 		Gtk.MenuItem install_item;
 		Gtk.MenuItem remove_item;
-		Gtk.SeparatorMenuItem separator_item;
 		Gtk.MenuItem reinstall_item;
 		Gtk.MenuItem install_optional_deps_item;
 		Gtk.MenuItem explicitly_installed_item;
-		Pamac.Package[] selected_pkgs;
+		Alpm.List<unowned Alpm.Package?> selected_pkgs;
+		GLib.List<unowned Json.Object> selected_aur;
 
 		// liststore
 		Gtk.ListStore search_list;
@@ -115,6 +124,11 @@ namespace Pamac {
 		Gtk.ListStore details_list;
 
 		PackagesModel packages_list;
+		AURModel aur_list;
+
+		public HashTable<string,Json.Array> aur_search_results;
+
+		public Alpm.Config alpm_config;
 
 		public Transaction transaction;
 
@@ -133,7 +147,7 @@ namespace Pamac {
 			remove_item = new Gtk.MenuItem.with_label (dgettext (null, "Remove"));
 			remove_item.activate.connect (on_remove_item_activate);
 			right_click_menu.append (remove_item);
-			separator_item = new Gtk.SeparatorMenuItem ();
+			var separator_item = new Gtk.SeparatorMenuItem ();
 			right_click_menu.append (separator_item);
 			reinstall_item = new Gtk.MenuItem.with_label (dgettext (null, "Reinstall"));
 			reinstall_item.activate.connect (on_reinstall_item_activate);
@@ -157,7 +171,7 @@ namespace Pamac {
 			deps_list = new Gtk.ListStore (2, typeof (string), typeof (string));
 			deps_treeview.set_model (deps_list);
 			details_list = new Gtk.ListStore (2, typeof (string), typeof (string));
-			details_treeview.set_model (details_list);;
+			details_treeview.set_model (details_list);
 
 			try {
 				installed_icon = new Gdk.Pixbuf.from_resource ("/org/manjaro/pamac/manager/package-installed-updated.png");
@@ -170,37 +184,53 @@ namespace Pamac {
 				stderr.printf (e.message);
 			}
 
-			transaction = new Pamac.Transaction (this as Gtk.ApplicationWindow);
+			transaction = new Transaction (this as Gtk.ApplicationWindow);
 			transaction.mode = Mode.MANAGER;
 			transaction.finished.connect (on_transaction_finished);
-			transaction.support_aur.connect (support_aur);
+			transaction.daemon.write_pamac_config_finished.connect (on_write_pamac_config_finished);
 			transaction.daemon.set_pkgreason_finished.connect (display_package_properties);
 
-			var pamac_config = new Pamac.Config ("/etc/pamac.conf");
-			if (pamac_config.recurse) {
-				transaction.flags |= Alpm.TransFlag.RECURSE;
-			}
-			Pamac.Package pkg = transaction.find_local_satisfier ("yaourt");
-			if (pkg.name == "") {
+			alpm_config = new Alpm.Config ("/etc/pacman.conf");
+			refresh_handle ();
+
+			unowned Alpm.Package? pkg = Alpm.find_satisfier (alpm_config.handle.localdb.pkgcache, "yaourt");
+			if (pkg == null) {
 				support_aur (false, false);
 			} else {
-				support_aur (pamac_config.enable_aur, pamac_config.search_aur);
+				support_aur (transaction.pamac_config.enable_aur, transaction.pamac_config.search_aur);
 			}
 
 			set_buttons_sensitive (false);
 
 			// sort by name by default
 			sortinfo = {0, Gtk.SortType.ASCENDING};
+
+			aur_search_results = new HashTable<string,Json.Array> (str_hash, str_equal);
+
 			update_lists ();
+			show_default_pkgs ();
+		}
+
+		void on_write_pamac_config_finished (bool recurse, uint64 refresh_period, bool no_update_hide_icon,
+											bool enable_aur, bool search_aur) {
+			if (recurse) {
+				transaction.flags |= Alpm.TransFlag.RECURSE;
+			}
+			unowned Alpm.Package? pkg = Alpm.find_satisfier (alpm_config.handle.localdb.pkgcache, "yaourt");
+			if (pkg != null) {
+				support_aur (enable_aur, search_aur);
+			}
 		}
 
 		public void support_aur (bool enable_aur, bool search_aur) {
 			if (enable_aur) {
 				search_aur_button.set_active (search_aur);
 				search_aur_box.set_visible (true);
+				aur_scrolledwindow.set_visible (true);
 			} else {
 				search_aur_button.set_active (false);
 				search_aur_box.set_visible (false);
+				aur_scrolledwindow.set_visible (false);
 			}
 		}
 
@@ -209,12 +239,127 @@ namespace Pamac {
 			cancel_button.set_sensitive (sensitive);
 		}
 
-		public void show_all_pkgs () {
+		public void refresh_handle () {
+			alpm_config.get_handle ();
+			if (alpm_config.handle == null) {
+				stderr.printf (dgettext (null, "Failed to initialize alpm library"));
+			}
+		}
+
+		public async Alpm.List<unowned Alpm.Package?> search_all_dbs (string search_string) {
+			var syncpkgs = new Alpm.List<unowned Alpm.Package?> ();
+			var needles = new Alpm.List<unowned string> ();
+			string[] splitted = search_string.split (" ");
+			foreach (unowned string part in splitted) {
+				needles.add (part);
+			}
+			var result = alpm_config.handle.localdb.search (needles);
+			foreach (var db in alpm_config.handle.syncdbs) {
+				if (syncpkgs.length == 0) {
+					syncpkgs = db.search (needles);
+				} else {
+					syncpkgs.join (db.search (needles).diff (syncpkgs, (Alpm.List.CompareFunc) compare_name));
+				}
+			}
+			result.join (syncpkgs.diff (result, (Alpm.List.CompareFunc) compare_name));
+			//result.sort ((Alpm.List.CompareFunc) compare_name);
+			return result;
+		}
+
+		public async Alpm.List<unowned Alpm.Package?> get_group_pkgs (string grp_name) {
+			var result = new Alpm.List<unowned Alpm.Package?> ();
+			unowned Alpm.Group? grp = alpm_config.handle.localdb.get_group (grp_name);
+			if (grp != null) {
+				foreach (var pkg in grp.packages) {
+					result.add (pkg);
+				}
+			}
+			result.join (Alpm.find_group_pkgs (alpm_config.handle.syncdbs, grp_name).diff (result, (Alpm.List.CompareFunc) compare_name));
+			//result.sort ((Alpm.List.CompareFunc) compare_name);
+			return result;
+		}
+
+		public async Alpm.List<unowned Alpm.Package?> get_installed_pkgs () {
+			return alpm_config.handle.localdb.pkgcache.copy ();
+		}
+
+		public async Alpm.List<unowned Alpm.Package?> get_orphans () {
+			var result = new Alpm.List<unowned Alpm.Package?> ();
+			foreach (var pkg in alpm_config.handle.localdb.pkgcache) {
+				if (pkg.reason == Alpm.Package.Reason.DEPEND) {
+					Alpm.List<string?> requiredby = pkg.compute_requiredby ();
+					if (requiredby.length == 0) {
+						Alpm.List<string?> optionalfor = pkg.compute_optionalfor ();
+						if (optionalfor.length == 0) {
+							result.add (pkg);
+						}
+						optionalfor.free_data ();
+					}
+					requiredby.free_data ();
+				}
+			}
+			return result;
+		}
+
+		public async Alpm.List<unowned Alpm.Package?> get_local_pkgs () {
+			var result = new Alpm.List<unowned Alpm.Package?> ();
+			foreach (var pkg in alpm_config.handle.localdb.pkgcache) {
+				if (get_sync_pkg (pkg.name) == null) {
+					result.add (pkg);
+				}
+			}
+			return result;
+		}
+
+		public async Alpm.List<unowned Alpm.Package?> get_repo_pkgs (string reponame) {
+			var result = new Alpm.List<unowned Alpm.Package?> ();
+			foreach (var db in alpm_config.handle.syncdbs) {
+				if (db.name == reponame) {
+					foreach (var sync_pkg in db.pkgcache) {
+						unowned Alpm.Package?local_pkg = alpm_config.handle.localdb.get_pkg (sync_pkg.name);
+						if (local_pkg != null) {
+							result.add (local_pkg);
+						} else {
+							result.add (sync_pkg);
+						}
+					}
+				}
+			}
+			return result;
+		}
+
+//~ 		public async Alpm.List<unowned Alpm.Package?> get_all_pkgs () {
+//~ 			var syncpkgs = new Alpm.List<unowned Alpm.Package?> ();
+//~ 			var result = new Alpm.List<unowned Alpm.Package?> ();
+//~ 			result = alpm_config.handle.localdb.pkgcache.copy ();
+//~ 			foreach (var db in alpm_config.handle.syncdbs) {
+//~ 				if (syncpkgs.length == 0)
+//~ 					syncpkgs = db.pkgcache.copy ();
+//~ 				else {
+//~ 					syncpkgs.join (db.pkgcache.diff (syncpkgs, (Alpm.List.CompareFunc) compare_name));
+//~ 				}
+//~ 			}
+//~ 			result.join (syncpkgs.diff (result, (Alpm.List.CompareFunc) compare_name));
+//~ 			//result.sort ((Alpm.List.CompareFunc) compare_name);
+//~ 			return result;
+//~ 		}
+
+		public unowned Alpm.Package? get_sync_pkg (string pkgname) {
+			unowned Alpm.Package? pkg = null;
+			foreach (var db in alpm_config.handle.syncdbs) {
+				pkg = db.get_pkg (pkgname);
+				if (pkg != null) {
+					break;
+				}
+			}
+			return pkg;
+		}
+
+		public void show_default_pkgs () {
 			this.get_window ().set_cursor (new Gdk.Cursor.for_display (Gdk.Display.get_default (), Gdk.CursorType.WATCH));
-			transaction.get_all_pkgs.begin ((obj, res) => {
-				var pkgs = transaction.get_all_pkgs.end (res);
-				populate_packages_list (pkgs);
-				this.get_window ().set_cursor (null);
+			get_installed_pkgs.begin ((obj, res) => {
+				var pkgs = get_installed_pkgs.end (res);
+				populate_packages_list ((owned) pkgs);
 			});
 		}
 
@@ -223,8 +368,14 @@ namespace Pamac {
 			Gtk.TreeSelection selection;
 			selection = repos_treeview.get_selection ();
 			selection.changed.disconnect (on_repos_treeview_selection_changed);
-			foreach (var repo in transaction.get_repos_names ()) {
-				repos_list.insert_with_values (out iter, -1, 0, repo);
+			var groups_names = new GLib.List<string> ();
+			foreach (var db in alpm_config.handle.syncdbs) {
+				repos_list.insert_with_values (out iter, -1, 0, db.name);
+				foreach (var group in db.groupcache) {
+					if (groups_names.find_custom (group.name, strcmp) == null) {
+						groups_names.append (group.name);
+					}
+				}
 			}
 			repos_list.insert_with_values (out iter, -1, 0, dgettext (null, "local"));
 			repos_list.get_iter_first (out iter);
@@ -233,8 +384,13 @@ namespace Pamac {
 
 			selection = groups_treeview.get_selection ();
 			selection.changed.disconnect (on_groups_treeview_selection_changed);
-			foreach (var grpname in transaction.get_groups_names ()) {
-				groups_list.insert_with_values (out iter, -1, 0, grpname);
+			foreach (var group in alpm_config.handle.localdb.groupcache) {
+				if (groups_names.find_custom (group.name, strcmp) == null) {
+					groups_names.append (group.name);
+				}
+			}
+			foreach (unowned string group_name in groups_names) {
+				groups_list.insert_with_values (out iter, -1, 0, group_name);
 			}
 			groups_list.set_sort_column_id (0, Gtk.SortType.ASCENDING);
 			groups_list.get_iter_first (out iter);
@@ -253,222 +409,247 @@ namespace Pamac {
 			selection.changed.connect_after (on_states_treeview_selection_changed);
 		}
 
-		public void set_infos_list (Pamac.Package pkg) {
+		public void set_package_infos_list (Alpm.Package pkg) {
 			name_label.set_markup ("<big><b>%s  %s</b></big>".printf (pkg.name, pkg.version));
 			desc_label.set_markup (Markup.escape_text (pkg.desc));
 			string url = Markup.escape_text (pkg.url);
-			if (pkg.repo == "AUR") {
-				string aur_url = "http://aur.archlinux.org/packages/" + pkg.name;
-				link_label.set_markup ("<a href=\"%s\">%s</a>\n\n<a href=\"%s\">%s</a>".printf (url, url, aur_url, aur_url));
-			} else {
-				link_label.set_markup ("<a href=\"%s\">%s</a>".printf (url, url));
-			}
+			link_label.set_markup ("<a href=\"%s\">%s</a>".printf (url, url));
 			StringBuilder licenses = new StringBuilder ();
 			licenses.append (dgettext (null, "Licenses"));
 			licenses.append (": ");
-			licenses.append (pkg.licenses);
+			foreach (unowned string license in pkg.licenses) {
+				if (licenses.len != 0) {
+					licenses.append (" ");
+				}
+				licenses.append (license);
+			}
 			licenses_label.set_markup (licenses.str);
 		}
 
-		public void set_deps_list (string pkgname) {
+		public void set_aur_infos_list (Json.Object pkg_info) {
+			name_label.set_markup ("<big><b>%s  %s</b></big>".printf (pkg_info.get_string_member ("Name"),
+																				pkg_info.get_string_member ("Version")));
+			desc_label.set_markup (Markup.escape_text (pkg_info.get_string_member ("Description")));
+			string url = Markup.escape_text (pkg_info.get_string_member ("URL") ?? "");
+			string aur_url = "http://aur.archlinux.org/packages/" + pkg_info.get_string_member ("Name");
+			link_label.set_markup ("<a href=\"%s\">%s</a>\n\n<a href=\"%s\">%s</a>".printf (url, url, aur_url, aur_url));
+			StringBuilder licenses = new StringBuilder ();
+			licenses.append (dgettext (null, "Licenses"));
+			licenses.append (": ");
+			licenses.append (pkg_info.get_string_member ("License") ?? dgettext (null, "Unknown"));
+			licenses_label.set_markup (licenses.str);
+		}
+
+		public void set_package_deps_list (Alpm.Package pkg) {
 			deps_list.clear ();
 			Gtk.TreeIter iter;
-			PackageDeps deps = transaction.get_pkg_deps (pkgname);
-			int i;
-			if (deps.depends.length != 0) {
+			unowned Alpm.List<unowned Alpm.Depend> deps = pkg.depends;
+			unowned Alpm.List<unowned Alpm.Depend>? list;
+			if (deps.length != 0) {
+				list = deps;
 				deps_list.insert_with_values (out iter, -1,
 												0, dgettext (null, "Depends On") + ":",
-												1, deps.depends[0]);
-				i = 1;
-				while (i < deps.depends.length) {
+												1, list.data.compute_string ());
+				for (list = list.next (); list != null; list = list.next ()) {
 					deps_list.insert_with_values (out iter, -1,
-												1, deps.depends[i]);
-					i++;
+												1, list.data.compute_string ());
 				}
 			}
-			if (deps.optdepends.length != 0) {
-				string[] uninstalled_optdeps = transaction.get_pkg_uninstalled_optdeps (pkgname);
-				string optdep = deps.optdepends[0];
-				if ((optdep in uninstalled_optdeps) == false) {
-					optdep = optdep + " [" + dgettext (null, "Installed") + "]";
+			deps = pkg.optdepends;
+			if (deps.length != 0) {
+				list = deps;
+				string optdep_str = list.data.compute_string ();
+				var optdep = new StringBuilder (optdep_str);
+				if (Alpm.find_satisfier (alpm_config.handle.localdb.pkgcache, optdep_str) != null) {
+					optdep.append (" [");
+					optdep.append (dgettext (null, "Installed"));
+					optdep.append ("]");
 				}
 				deps_list.insert_with_values (out iter, -1,
-												0, dgettext (null, "Optional Dependencies") + ":",
-												1, optdep);
-				i = 1;
-				while (i < deps.optdepends.length) {
-					optdep = deps.optdepends[i];
-					if ((optdep in uninstalled_optdeps) == false) {
-						optdep = optdep + " [" + dgettext (null, "Installed") + "]";
+											0, dgettext (null, "Optional Dependencies") + ":",
+											1, optdep.str);
+				for (list = list.next (); list != null; list = list.next ()) {
+					optdep_str = list.data.compute_string ();
+					optdep = new StringBuilder (optdep_str);
+					if (Alpm.find_satisfier (alpm_config.handle.localdb.pkgcache, optdep_str) != null) {
+						optdep.append (" [");
+						optdep.append (dgettext (null, "Installed"));
+						optdep.append ("]");
 					}
-					deps_list.insert_with_values (out iter, -1, 1, optdep);
-					i++;
+					deps_list.insert_with_values (out iter, -1, 1, optdep.str);
 				}
 			}
-			if (deps.repo == "local") {
-				if (deps.requiredby.length != 0) {
+			if (pkg.origin == Alpm.Package.From.LOCALDB) {
+				Alpm.List<string> requiredby = pkg.compute_requiredby ();
+				unowned Alpm.List<string>? list2;
+				if (requiredby.length != 0) {
+					list2 = requiredby;
 					deps_list.insert_with_values (out iter, -1,
 													0, dgettext (null, "Required By") + ":",
-													1, deps.requiredby[0]);
-					i = 1;
-					while (i < deps.requiredby.length) {
+													1, list2.data);
+					for (list2 = list2.next (); list2 != null; list2 = list2.next ()) {
 						deps_list.insert_with_values (out iter, -1,
-													1, deps.requiredby[i]);
-						i++;
+													1, list2.data);
 					}
 				}
-			}
-			if (deps.repo == "local") {
-				if (deps.optionalfor.length != 0) {
+				requiredby.free_data ();
+				Alpm.List<string> optionalfor = pkg.compute_optionalfor ();
+				if (optionalfor.length != 0) {
+					list2 = optionalfor;
 					deps_list.insert_with_values (out iter, -1,
 													0, dgettext (null, "Optional For") + ":",
-													1, deps.optionalfor[0]);
-					i = 1;
-					while (i < deps.optionalfor.length) {
+													1, list2.data);
+					for (list2 = list2.next (); list2 != null; list2 = list2.next ()) {
 						deps_list.insert_with_values (out iter, -1,
-													1, deps.optionalfor[i]);
-						i++;
+													1, list2.data);
 					}
 				}
+				optionalfor.free_data ();
 			}
-			if (deps.provides.length != 0) {
+			deps = pkg.provides;
+			if (deps.length != 0) {
+				list = deps;
 				deps_list.insert_with_values (out iter, -1,
 												0, dgettext (null, "Provides") + ":",
-												1, deps.provides[0]);
-				i = 1;
-				while (i < deps.provides.length) {
+												1, list.data.compute_string ());
+				for (list = list.next (); list != null; list = list.next ()) {
 					deps_list.insert_with_values (out iter, -1,
-												1, deps.provides[i]);
-					i++;
+												1, list.data.compute_string ());
 				}
 			}
-			if (deps.replaces.length != 0) {
+			deps = pkg.replaces;
+			if (deps.length != 0) {
+				list = deps;
 				deps_list.insert_with_values (out iter, -1,
 												0, dgettext (null, "Replaces") + ":",
-												1, deps.replaces[0]);
-				i = 1;
-				while (i < deps.replaces.length) {
+												1, list.data.compute_string ());
+				for (list = list.next (); list != null; list = list.next ()) {
 					deps_list.insert_with_values (out iter, -1,
-												1, deps.replaces[i]);
-					i++;
+												1, list.data.compute_string ());
 				}
 			}
-			if (deps.conflicts.length != 0) {
+			deps = pkg.conflicts;
+			if (deps.length != 0) {
+				list = deps;
 				deps_list.insert_with_values (out iter, -1,
 												0, dgettext (null, "Conflicts With") + ":",
-												1, deps.conflicts[0]);
-				i = 1;
-				while (i < deps.conflicts.length) {
+												1, list.data.compute_string ());
+				for (list = list.next (); list != null; list = list.next ()) {
 					deps_list.insert_with_values (out iter, -1,
-												1, deps.conflicts[i]);
-					i++;
+												1, list.data.compute_string ());
 				}
 			}
 		}
 
-		public void set_details_list (string pkgname) {
+		public void set_package_details_list (Alpm.Package pkg) {
 			details_list.clear ();
 			Gtk.TreeIter iter;
-			PackageDetails details = transaction.get_pkg_details (pkgname);
-			int i;
-			if (details.repo != "local" && details.repo != "AUR") {
+			if (pkg.origin == Alpm.Package.From.SYNCDB) {
 				details_list.insert_with_values (out iter, -1,
-													0, dgettext (null, "Repository") + ":",
-													1, details.repo);
+												0, dgettext (null, "Repository") + ":",
+												1, pkg.db.name);
 			}
-			if (details.groups.length != 0) {
+			unowned Alpm.List<unowned string> groups = pkg.groups;
+			if (groups.length != 0) {
+				unowned Alpm.List<unowned string>? list = groups;
 				details_list.insert_with_values (out iter, -1,
 												0, dgettext (null, "Groups") + ":",
-												1, details.groups[0]);
-				i = 1;
-				while (i < details.groups.length) {
+												1, list.data);
+				for (list = list.next (); list != null; list = list.next ()) {
 					details_list.insert_with_values (out iter, -1,
-												1, details.groups[i]);
-					i++;
+												1, list.data);
 				}
 			}
-			if (details.repo == "AUR") {
+			details_list.insert_with_values (out iter, -1,
+											0, dgettext (null, "Packager") + ":",
+											1, pkg.packager);
+			GLib.Time time = GLib.Time.local ((time_t) pkg.builddate);
+			string build_date = time.format ("%a %d %b %Y %X %Z");
+			details_list.insert_with_values (out iter, -1,
+											0, dgettext (null, "Build Date") + ":",
+											1, build_date);
+			if (pkg.origin == Alpm.Package.From.LOCALDB) {
+				time = GLib.Time.local ((time_t) pkg.installdate);
+				string install_date = time.format ("%a %d %b %Y %X %Z");
 				details_list.insert_with_values (out iter, -1,
-														0, dgettext (null, "Maintainer") + ":",
-														1, details.packager);
-				details_list.insert_with_values (out iter, -1,
-														0, dgettext (null, "First Submitted") + ":",
-														1, details.build_date);
-				details_list.insert_with_values (out iter, -1,
-														0, dgettext (null, "Last Modified") + ":",
-														1, details.install_date);
-			} else {
-				details_list.insert_with_values (out iter, -1,
-														0, dgettext (null, "Packager") + ":",
-														1, details.packager);
-				details_list.insert_with_values (out iter, -1,
-														0, dgettext (null, "Build Date") + ":",
-														1, details.build_date);
-			}
-			if (details.repo == "local") {
-				details_list.insert_with_values (out iter, -1,
-													0, dgettext (null, "Install Date") + ":",
-													1, details.install_date);
+												0, dgettext (null, "Install Date") + ":",
+												1, install_date);
 				string reason;
-				if (details.reason == Alpm.Package.Reason.EXPLICIT) {
+				if (pkg.reason == Alpm.Package.Reason.EXPLICIT) {
 					reason = dgettext (null, "Explicitly installed");
-				} else if (details.reason == Alpm.Package.Reason.DEPEND) {
+				} else if (pkg.reason == Alpm.Package.Reason.DEPEND) {
 					reason = dgettext (null, "Installed as a dependency for another package");
 				} else {
 					reason = dgettext (null, "Unknown");
 				}
 				details_list.insert_with_values (out iter, -1,
-													0, dgettext (null, "Install Reason") + ":",
-													1, reason);
+												0, dgettext (null, "Install Reason") + ":",
+												1, reason);
 			}
-			if (details.repo != "local" && details.repo != "AUR") {
+			if (pkg.origin == Alpm.Package.From.SYNCDB) {
+				string has_signature = pkg.base64_sig != null ? dgettext (null, "Yes") : dgettext (null, "No");
 				details_list.insert_with_values (out iter, -1,
-													0, dgettext (null, "Signatures") + ":",
-													1, details.has_signature);
+												0, dgettext (null, "Signatures") + ":",
+												1, has_signature);
 			}
-			if (details.repo == "AUR") {
-				details_list.insert_with_values (out iter, -1,
-													0, dgettext (null, "Votes") + ":",
-													1, details.reason.to_string ());
-				if (details.has_signature != "") {
-					details_list.insert_with_values (out iter, -1,
-														0, dgettext (null, "Out of Date") + ":",
-														1, details.has_signature);
-				}
-			}
-			if (details.repo == "local") {
-				if (details.backups.length != 0) {
+			if (pkg.origin == Alpm.Package.From.LOCALDB) {
+				unowned Alpm.List<unowned Alpm.Backup> backups = pkg.backups;
+				if (backups.length != 0) {
+					unowned Alpm.List<unowned Alpm.Backup>? list = backups;
 					details_list.insert_with_values (out iter, -1,
 													0, dgettext (null, "Backup files") + ":",
-													1, "/" + details.backups[0]);
-					i = 1;
-					while (i < details.backups.length) {
+													1, "/" + list.data.name);
+					for (list = list.next (); list != null; list = list.next ()) {
 						details_list.insert_with_values (out iter, -1,
-													1, "/" + details.backups[i]);
-						i++;
+													1, "/" + list.data.name);
 					}
 				}
 			}
 		}
 
-		public void set_files_list (string pkgname) {
+		public void set_aur_details_list (Json.Object pkg_info) {
+			details_list.clear ();
+			Gtk.TreeIter iter;
+			details_list.insert_with_values (out iter, -1,
+													0, dgettext (null, "Maintainer") + ":",
+													1, pkg_info.get_string_member ("Maintainer"));
+			GLib.Time time = GLib.Time.local ((time_t) pkg_info.get_int_member ("FirstSubmitted"));
+			details_list.insert_with_values (out iter, -1,
+													0, dgettext (null, "First Submitted") + ":",
+													1, time.format ("%a %d %b %Y %X %Z"));
+			time = GLib.Time.local ((time_t) pkg_info.get_int_member ("LastModified"));
+			details_list.insert_with_values (out iter, -1,
+													0, dgettext (null, "Last Modified") + ":",
+													1, time.format ("%a %d %b %Y %X %Z"));
+			details_list.insert_with_values (out iter, -1,
+													0, dgettext (null, "Votes") + ":",
+													1, pkg_info.get_int_member ("NumVotes").to_string ());
+			if (!pkg_info.get_null_member ("OutOfDate")) {
+				time = GLib.Time.local ((time_t) pkg_info.get_int_member ("OutOfDate"));
+				details_list.insert_with_values (out iter, -1,
+													0, dgettext (null, "Out of Date") + ":",
+													1, time.format ("%a %d %b %Y %X %Z"));
+			}
+		}
+
+		public void set_package_files_list (Alpm.Package pkg) {
 			StringBuilder text = new StringBuilder (); 
-			foreach (var file in transaction.get_pkg_files (pkgname)) {
+			foreach (var file in pkg.files) {
 				if (text.len != 0) {
 					text.append ("\n");
 				}
 				text.append ("/");
-				text.append (file);
+				text.append (file.name);
 			}
 			files_textview.buffer.set_text (text.str, (int) text.len);
 		}
 
-		public void populate_packages_list (Pamac.Package[] pkgs) {
+		public void populate_packages_list (owned Alpm.List<unowned Alpm.Package?>? pkgs) {
 			packages_treeview.freeze_child_notify ();
 			packages_treeview.set_model (null);
 
 			// populate liststore
-			packages_list = new PackagesModel (pkgs, this);
+			packages_list = new PackagesModel ((owned) pkgs, this);
 
 			// sort liststore
 			int column = sortinfo.column_number;
@@ -498,59 +679,159 @@ namespace Pamac {
 			this.get_window ().set_cursor (null);
 		}
 
+		public void populate_aur_list (Json.Array? pkgs_infos) {
+			aur_treeview.freeze_child_notify ();
+			aur_treeview.set_model (null);
+
+			// populate liststore
+			aur_list = new AURModel (pkgs_infos, this);
+
+			// sort liststore
+			int column = sortinfo.column_number;
+			switch (column) {
+				case 0:
+					aur_list.sort_by_name (sortinfo.sort_type);
+					break;
+				case 1:
+					aur_list.sort_by_state (sortinfo.sort_type);
+					break;
+				case 2:
+					aur_list.sort_by_version (sortinfo.sort_type);
+					break;
+				case 3:
+					aur_list.sort_by_votes (sortinfo.sort_type);
+					break;
+				default:
+					break;
+			}
+
+			aur_treeview.set_model (aur_list);
+			aur_treeview.thaw_child_notify ();
+
+			this.get_window ().set_cursor (null);
+		}
+
 		public void refresh_packages_list () {
-			int current_page = filters_notebook.get_current_page ();
-			if (current_page == 0) {
-				Gtk.TreeSelection selection = search_treeview.get_selection ();
-				if (selection.get_selected (null, null)) {
-					on_search_treeview_selection_changed ();
-				} else {
-					show_all_pkgs ();
-				}
-			} else if (current_page == 1) {
-				on_groups_treeview_selection_changed ();
-			} else if (current_page == 2) {
-				on_states_treeview_selection_changed ();
-			} else if (current_page == 3) {
-				on_repos_treeview_selection_changed ();
+			switch (filters_notebook.get_current_page ()) {
+				case 0:
+					if (search_aur_button.get_active ()) {
+						aur_scrolledwindow.set_visible (true);
+					}
+					Gtk.TreeSelection selection = search_treeview.get_selection ();
+					if (selection.get_selected (null, null)) {
+						on_search_treeview_selection_changed ();
+					} else {
+						show_default_pkgs ();
+					}
+					break;
+				case 1:
+					aur_scrolledwindow.set_visible (false);
+					on_groups_treeview_selection_changed ();
+					break;
+				case 2:
+					aur_scrolledwindow.set_visible (false);
+					on_states_treeview_selection_changed ();
+					break;
+				case 3:
+					aur_scrolledwindow.set_visible (false);
+					on_repos_treeview_selection_changed ();
+					break;
+				default:
+					break;
 			}
 		}
 
 		public void display_package_properties () {
-			Gtk.TreeSelection selection = packages_treeview.get_selection ();
-			GLib.List<Gtk.TreePath> selected = selection.get_selected_rows (null);
-			if (selected.length () > 0) {
-				// display info for the first package of the selection
-				Pamac.Package pkg = packages_list.get_pkg_at_path (selected.nth_data (0));
-				if (pkg.name == dgettext (null, "No package found")) {
-					return;
-				}
-				if (pkg.repo == "local") {
-					deps_scrolledwindow.visible = true;
-					files_scrolledwindow.visible = true;
-				} else if (pkg.repo == "AUR") {
-					deps_scrolledwindow.visible = false;
-					files_scrolledwindow.visible = false;
-				} else {
-					deps_scrolledwindow.visible = true;
-					files_scrolledwindow.visible = false;
-				}
-				switch (properties_notebook.get_current_page ()) {
-					case 0:
-						set_infos_list (pkg);
-						break;
-					case 1:
-						set_deps_list (pkg.name);
-						break;
-					case 2:
-						set_details_list (pkg.name);
-						break;
-					case 3:
-						set_files_list (pkg.name);
-						break;
-					default:
-						break;
-				}
+			switch (packages_notebook.get_current_page ()) {
+				case 0:
+					Gtk.TreeSelection selection = packages_treeview.get_selection ();
+					GLib.List<Gtk.TreePath> selected = selection.get_selected_rows (null);
+					if (selected.length () > 0) {
+						// display info for the first package of the selection
+						unowned Alpm.Package? pkg = packages_list.get_pkg_at_path (selected.nth_data (0));
+						if (pkg == null) {
+							return;
+						}
+						if (pkg.origin == Alpm.Package.From.LOCALDB) {
+							files_scrolledwindow.visible = true;
+						} else {
+							files_scrolledwindow.visible = false;
+						}
+						switch (properties_notebook.get_current_page ()) {
+							case 0:
+								set_package_infos_list (pkg);
+								deps_scrolledwindow.visible = true;
+								break;
+							case 1:
+								set_package_deps_list (pkg);
+								break;
+							case 2:
+								set_package_details_list (pkg);
+								deps_scrolledwindow.visible = true;
+								break;
+							case 3:
+								if (pkg.origin == Alpm.Package.From.LOCALDB) {
+									set_package_files_list (pkg);
+								}
+								break;
+							default:
+								break;
+						}
+					}
+					break;
+				case 1:
+					Gtk.TreeSelection selection = aur_treeview.get_selection ();
+					GLib.List<Gtk.TreePath> selected = selection.get_selected_rows (null);
+					if (selected.length () > 0) {
+						// display info for the first package of the selection
+						unowned Json.Object? pkg_info = aur_list.get_pkg_at_path (selected.nth_data (0));
+						if (pkg_info == null) {
+							return;
+						}
+						unowned Alpm.Package? pkg = alpm_config.handle.localdb.get_pkg (pkg_info.get_string_member ("Name"));
+						if (pkg != null) {
+							files_scrolledwindow.visible = true;
+							switch (properties_notebook.get_current_page ()) {
+								case 0:
+									set_package_infos_list (pkg);
+									deps_scrolledwindow.visible = true;
+									break;
+								case 1:
+									set_package_deps_list (pkg);
+									break;
+								case 2:
+									set_package_details_list (pkg);
+									deps_scrolledwindow.visible = true;
+									break;
+								case 3:
+									set_package_files_list (pkg);
+									break;
+								default:
+									break;
+							}
+						} else {
+							files_scrolledwindow.visible = false;
+							deps_scrolledwindow.visible = false;
+							switch (properties_notebook.get_current_page ()) {
+								case 0:
+									set_aur_infos_list (pkg_info);
+									break;
+								case 1:
+									break;
+								case 2:
+									set_aur_details_list (pkg_info);
+									break;
+								case 3:
+									break;
+								default:
+									break;
+							}
+							break;
+						}
+					}
+					break;
+				default:
+					break;
 			}
 		}
 
@@ -559,6 +840,11 @@ namespace Pamac {
 			display_package_properties ();
 		}
 
+		[GtkCallback]
+		public void on_aur_treeview_selection_changed () {
+			display_package_properties ();
+		}
+
 		[GtkCallback]
 		public void on_properties_notebook_switch_page (Gtk.Widget page, uint page_num) {
 			display_package_properties ();
@@ -566,31 +852,21 @@ namespace Pamac {
 
 		[GtkCallback]
 		public void on_packages_treeview_row_activated (Gtk.TreeView treeview, Gtk.TreePath path, Gtk.TreeViewColumn column) {
-			Gtk.TreeIter iter;
-			if (packages_list.get_iter (out iter, path)) {
-				GLib.Value val;
-				packages_list.get_value (iter, 0, out val);
-				string name = val.get_string ();
-				if (name != dgettext (null, "No package found")) {
-					if (transaction.to_add.remove (name)) {
-					} else if (transaction.to_remove.remove (name)) {
-					} else if (transaction.to_build.remove (name)) {
-					} else {
-						packages_list.get_value (iter, 3, out val);
-						string db_name = val.get_string ();
-						if (db_name == "local") {
-							if (transaction.should_hold (name) == false) {
-								transaction.to_remove.add ((owned) name);
-							}
-						} else if (db_name == "AUR") {
-							transaction.to_build.add ((owned) name);
-						} else {
-							transaction.to_add.add ((owned) name);
+			unowned Alpm.Package? pkg = packages_list.get_pkg_at_path (path);
+			if (pkg != null) {
+				if (transaction.to_add.remove (pkg.name)) {
+				} else if (transaction.to_remove.remove (pkg.name)) {
+				} else {
+					if (pkg.origin == Alpm.Package.From.LOCALDB) {
+						if (alpm_config.holdpkgs.find_custom (pkg.name, strcmp) == null) {
+							transaction.to_remove.add (pkg.name);
 						}
+					} else {
+						transaction.to_add.add (pkg.name);
 					}
 				}
 			}
-			if (transaction.to_add.length + transaction.to_remove.length + transaction.to_build.length == 0) {
+			if ((transaction.to_add.length == 0) && (transaction.to_remove.length == 0)) {
 				set_buttons_sensitive (false);
 			} else {
 				set_buttons_sensitive (true);
@@ -599,27 +875,49 @@ namespace Pamac {
 			packages_treeview.queue_draw ();
 		}
 
-		void on_install_item_activate () {
-			Pamac.Package find_pkg;
-			foreach (Pamac.Package pkg in selected_pkgs) {
-				if (pkg.repo == "AUR") {
-					transaction.to_build.add (pkg.name);
-				} else {
-					find_pkg = transaction.find_local_pkg (pkg.name);
-					if (find_pkg.name == "") {
-						transaction.to_add.add (pkg.name);
+		[GtkCallback]
+		public void on_aur_treeview_row_activated (Gtk.TreeView treeview, Gtk.TreePath path, Gtk.TreeViewColumn column) {
+			unowned Json.Object? pkg_info = aur_list.get_pkg_at_path (path);
+			if (pkg_info != null) {
+				unowned Alpm.Package? pkg = alpm_config.handle.localdb.get_pkg (pkg_info.get_string_member ("Name"));
+				if (pkg != null) {
+					if (pkg.origin == Alpm.Package.From.LOCALDB) {
+						if (alpm_config.holdpkgs.find_custom (pkg.name, strcmp) == null) {
+							transaction.to_remove.add (pkg.name);
+						}
 					}
+				} else if (transaction.to_build.remove (pkg_info.get_string_member ("Name"))) {
+				} else {
+					transaction.to_build.add (pkg_info.get_string_member ("Name"));
 				}
 			}
+			if ((transaction.to_build.length == 0) && (transaction.to_remove.length == 0)) {
+				set_buttons_sensitive (false);
+			} else {
+				set_buttons_sensitive (true);
+			}
+			// force a display refresh
+			aur_treeview.queue_draw ();
+		}
+
+		void on_install_item_activate () {
+			foreach (var pkg in selected_pkgs) {
+				if (pkg.origin == Alpm.Package.From.SYNCDB) {
+					transaction.to_add.add (pkg.name);
+				}
+			}
+			foreach (var pkg_info in selected_aur) {
+				transaction.to_build.add (pkg_info.get_string_member ("Name"));
+			}
 			if (transaction.to_add.length != 0 || transaction.to_build.length != 0) {
 				set_buttons_sensitive (true);
 			}
 		}
 
 		void on_reinstall_item_activate () {
-			foreach (Pamac.Package pkg in selected_pkgs) {
+			foreach (var pkg in selected_pkgs) {
 				transaction.to_remove.remove (pkg.name);
-				if (pkg.repo == "local") {
+				if (pkg.origin == Alpm.Package.From.LOCALDB) {
 					transaction.to_add.add (pkg.name);
 				}
 			}
@@ -629,10 +927,10 @@ namespace Pamac {
 		}
 
 		void on_remove_item_activate () {
-			foreach (Pamac.Package pkg in selected_pkgs) {
+			foreach (var pkg in selected_pkgs) {
 				transaction.to_add.remove (pkg.name);
-				if (transaction.should_hold (pkg.name) == false) {
-					if (pkg.repo == "local") {
+				if (alpm_config.holdpkgs.find_custom (pkg.name, strcmp) == null) {
+					if (pkg.origin == Alpm.Package.From.LOCALDB) {
 						transaction.to_remove.add (pkg.name);
 					}
 				}
@@ -643,21 +941,40 @@ namespace Pamac {
 		}
 
 		void on_deselect_item_activate () {
-			foreach (Pamac.Package pkg in selected_pkgs) {
+			foreach (var pkg in selected_pkgs) {
 				if (transaction.to_add.remove (pkg.name)) {
-				} else if (transaction.to_remove.remove (pkg.name)) {
-				} else if (transaction.to_build.remove (pkg.name)) {
+				} else {
+					transaction.to_remove.remove (pkg.name);
 				}
 			}
-			if (transaction.to_add.length == 0 && transaction.to_remove.length == 0
-					&& transaction.to_load.length == 0 && transaction.to_build.length == 0) {
+			foreach (var pkg_info in selected_aur) {
+				transaction.to_build.remove (pkg_info.get_string_member ("Name"));
+			}
+			if ((transaction.to_add.length == 0)
+				&& (transaction.to_remove.length == 0)
+				&& (transaction.to_load.length == 0)
+				&& (transaction.to_build.length == 0)) {
 				set_buttons_sensitive (false);
 			}
 		}
 
-		public void choose_opt_dep (Pamac.Package[] pkgs) {
-			foreach (Pamac.Package pkg in pkgs) {
-				var choose_dep_dialog = new ChooseDependenciesDialog (transaction, pkg.name, this);
+		public void choose_opt_dep (Alpm.List<unowned Alpm.Package?> pkgs) {
+			foreach (var pkg in pkgs) {
+				var choose_dep_dialog = new ChooseDependenciesDialog (this);
+				Gtk.TreeIter iter;
+				int length = 0;
+				foreach (var optdep in pkg.optdepends) {
+					if (Alpm.find_satisfier (alpm_config.handle.localdb.pkgcache, optdep.name) == null) {
+						length++;
+					}
+					choose_dep_dialog.deps_list.insert_with_values (out iter, -1,
+											0, false,
+											1, optdep.name,
+											2, optdep.desc);
+				}
+				choose_dep_dialog.label.set_markup ("<b>%s</b>".printf (
+					dngettext (null, "%s has %u uninstalled optional dependency.\nChoose if you would like to install it",
+							"%s has %u uninstalled optional dependencies.\nChoose those you would like to install", length).printf (pkg.name, length)));
 				if (choose_dep_dialog.run () == Gtk.ResponseType.OK) {
 					choose_dep_dialog.deps_list.foreach ((model, path, iter) => {
 						GLib.Value val;
@@ -665,8 +982,10 @@ namespace Pamac {
 						bool selected = val.get_boolean ();
 						if (selected) {
 							choose_dep_dialog.deps_list.get_value (iter, 1, out val);
-							string name = val.get_string ();
-							transaction.to_add.add ((owned) name);
+							unowned Alpm.Package? sync_pkg = get_sync_pkg (val.get_string ());
+							if (sync_pkg != null) {
+								transaction.to_add.add (sync_pkg.name);
+							}
 						}
 						return false;
 					});
@@ -686,26 +1005,39 @@ namespace Pamac {
 		}
 
 		void on_explicitly_installed_item_activate () {
-			foreach (Pamac.Package pkg in selected_pkgs) {
+			foreach (var pkg in selected_pkgs) {
 				transaction.start_set_pkgreason (pkg.name, Alpm.Package.Reason.EXPLICIT);
 			}
 			refresh_packages_list ();
 		}
 
+
+		public async void search_in_aur (string search_string) {
+			if (!aur_search_results.contains (search_string)) {
+				Json.Array results = AUR.search (search_string.split (" "));
+				aur_search_results.insert (search_string, results);
+			}
+		}
+
+		[GtkCallback]
+		public void on_packages_notebook_switch_page (Gtk.Widget page, uint page_num) {
+			refresh_packages_list ();
+		}
+
 		[GtkCallback]
 		public bool on_packages_treeview_button_press_event (Gdk.EventButton event) {
 			packages_treeview.grab_focus ();
 			// Check if right mouse button was clicked
 			if (event.type == Gdk.EventType.BUTTON_PRESS && event.button == 3) {
 				Gtk.TreePath? treepath;
-				Pamac.Package clicked_pkg;
+				unowned Alpm.Package? clicked_pkg;
 				Gtk.TreeSelection selection = packages_treeview.get_selection ();
 				packages_treeview.get_path_at_pos ((int) event.x, (int) event.y, out treepath, null, null, null);
-				clicked_pkg = packages_list.get_pkg_at_path (treepath);;
-				if (clicked_pkg.name == dgettext (null, "No package found")) {
+				clicked_pkg = packages_list.get_pkg_at_path (treepath);
+				if (clicked_pkg == null) {
 					return true;
 				}
-				if (selection.path_is_selected (treepath) == false) {
+				if (!selection.path_is_selected (treepath)) {
 					selection.unselect_all ();
 					selection.select_path (treepath);
 				}
@@ -716,41 +1048,43 @@ namespace Pamac {
 				reinstall_item.set_sensitive (false);
 				install_optional_deps_item.set_sensitive (false);
 				explicitly_installed_item.set_sensitive (false);
-				selected_pkgs = {};
-				foreach (Gtk.TreePath path in selected_paths) {
-					selected_pkgs += packages_list.get_pkg_at_path (path);
+				selected_pkgs = new Alpm.List<unowned Alpm.Package?> ();
+				foreach (unowned Gtk.TreePath path in selected_paths) {
+					selected_pkgs.add (packages_list.get_pkg_at_path (path));
 				}
-				foreach (Pamac.Package pkg in selected_pkgs) {
+				foreach (var pkg in selected_pkgs) {
 					if (transaction.to_add.contains (pkg.name)
-							|| transaction.to_remove.contains (pkg.name)
-							|| transaction.to_build.contains (pkg.name)) {
+							|| transaction.to_remove.contains (pkg.name)) {
 						deselect_item.set_sensitive (true);
 						break;
 					}
 				}
-				foreach (Pamac.Package pkg in selected_pkgs) {
-					if (pkg.repo != "local") {
+				foreach (var pkg in selected_pkgs) {
+					if (pkg.origin == Alpm.Package.From.SYNCDB) {
 						install_item.set_sensitive (true);
 						break;
 					}
 				}
-				foreach (Pamac.Package pkg in selected_pkgs) {
-					if (pkg.repo == "local") {
+				foreach (var pkg in selected_pkgs) {
+					if (pkg.origin == Alpm.Package.From.LOCALDB) {
 						remove_item.set_sensitive (true);
 						break;
 					}
 				}
 				if (selected_pkgs.length == 1) {
-					clicked_pkg = selected_pkgs[0];
-					if (clicked_pkg.repo == "local") {
-						if (transaction.get_pkg_uninstalled_optdeps (clicked_pkg.name).length != 0) {
-							install_optional_deps_item.set_sensitive (true);
+					clicked_pkg = selected_pkgs.data;
+					if (clicked_pkg.origin == Alpm.Package.From.LOCALDB) {
+						foreach (var optdep in clicked_pkg.optdepends) {
+							if (Alpm.find_satisfier (alpm_config.handle.localdb.pkgcache, optdep.name) == null) {
+								install_optional_deps_item.set_sensitive (true);
+								break;
+							}
 						}
 						if (clicked_pkg.reason == Alpm.Package.Reason.DEPEND) {
 							explicitly_installed_item.set_sensitive (true);
 						}
-						Pamac.Package find_pkg = transaction.find_sync_pkg (clicked_pkg.name);
-						if (find_pkg.name != "") {
+						unowned Alpm.Package? find_pkg = get_sync_pkg (clicked_pkg.name);
+						if (find_pkg != null) {
 							if (Alpm.pkg_vercmp (find_pkg.version, clicked_pkg.version) == 0) {
 								reinstall_item.set_sensitive (true);
 							}
@@ -765,9 +1099,70 @@ namespace Pamac {
 		}
 
 		[GtkCallback]
-		public void on_name_column_clicked () {
+		public bool on_aur_treeview_button_press_event (Gdk.EventButton event) {
+			aur_treeview.grab_focus ();
+			// Check if right mouse button was clicked
+			if (event.type == Gdk.EventType.BUTTON_PRESS && event.button == 3) {
+				Gtk.TreePath? treepath;
+				unowned Json.Object? clicked_pkg_info;
+				Gtk.TreeSelection selection = aur_treeview.get_selection ();
+				aur_treeview.get_path_at_pos ((int) event.x, (int) event.y, out treepath, null, null, null);
+				clicked_pkg_info = aur_list.get_pkg_at_path (treepath);
+				if (clicked_pkg_info == null) {
+					return true;
+				}
+				if (!selection.path_is_selected (treepath)) {
+					selection.unselect_all ();
+					selection.select_path (treepath);
+				}
+				GLib.List<Gtk.TreePath> selected_paths = selection.get_selected_rows (null);
+				deselect_item.set_sensitive (false);
+				install_item.set_sensitive (false);
+				remove_item.set_sensitive (false);
+				reinstall_item.set_sensitive (false);
+				install_optional_deps_item.set_sensitive (false);
+				explicitly_installed_item.set_sensitive (false);
+				selected_pkgs = new Alpm.List<unowned Alpm.Package?> ();
+				selected_aur = new GLib.List<unowned Json.Object> ();
+				foreach (unowned Gtk.TreePath path in selected_paths) {
+					unowned Alpm.Package? pkg = alpm_config.handle.localdb.get_pkg (clicked_pkg_info.get_string_member ("Name"));
+					if (pkg != null) {
+						selected_pkgs.add (pkg);
+						// there is for sure a pkg to remove
+						remove_item.set_sensitive (true);
+					} else {
+						selected_aur.append (aur_list.get_pkg_at_path (path));
+					}
+				}
+				foreach (var pkg_info in selected_aur) {
+					if (transaction.to_build.contains (pkg_info.get_string_member ("Name"))) {
+						deselect_item.set_sensitive (true);
+						break;
+					}
+				}
+				foreach (var pkg_info in selected_aur) {
+					if (!transaction.to_build.contains (pkg_info.get_string_member ("Name"))) {
+						install_item.set_sensitive (true);
+						break;
+					}
+				}
+				foreach (var pkg in selected_pkgs) {
+					if (transaction.to_remove.contains (pkg.name)) {
+						deselect_item.set_sensitive (true);
+						break;
+					}
+				}
+				right_click_menu.popup (null, null, null, event.button, event.time);
+				return true;
+			} else {
+				return false;
+			}
+		}
+
+		[GtkCallback]
+		public void on_packages_name_column_clicked () {
 			Gtk.SortType new_order;
-			if (name_column.sort_indicator == false) {
+			if (!packages_name_column.sort_indicator) {
 				new_order = Gtk.SortType.ASCENDING;
 			} else {
 				if (sortinfo.sort_type == Gtk.SortType.ASCENDING) {
@@ -782,9 +1177,26 @@ namespace Pamac {
 		}
 
 		[GtkCallback]
-		public void on_state_column_clicked () {
+		public void on_aur_name_column_clicked () {
 			Gtk.SortType new_order;
-			if (state_column.sort_indicator == false) {
+			if (!aur_name_column.sort_indicator) {
+				new_order = Gtk.SortType.ASCENDING;
+			} else {
+				if (sortinfo.sort_type == Gtk.SortType.ASCENDING) {
+					new_order =  Gtk.SortType.DESCENDING;
+				} else {
+					new_order =  Gtk.SortType.ASCENDING;
+				}
+			}
+			aur_list.sort_by_name (new_order);
+			// force a display refresh
+			aur_treeview.queue_draw ();
+		}
+
+		[GtkCallback]
+		public void on_packages_state_column_clicked () {
+			Gtk.SortType new_order;
+			if (!packages_state_column.sort_indicator) {
 				new_order = Gtk.SortType.ASCENDING;
 			} else {
 				if (sortinfo.sort_type == Gtk.SortType.ASCENDING) {
@@ -799,9 +1211,26 @@ namespace Pamac {
 		}
 
 		[GtkCallback]
-		public void on_version_column_clicked () {
+		public void on_aur_state_column_clicked () {
 			Gtk.SortType new_order;
-			if (version_column.sort_indicator == false) {
+			if (!aur_state_column.sort_indicator) {
+				new_order = Gtk.SortType.ASCENDING;
+			} else {
+				if (sortinfo.sort_type == Gtk.SortType.ASCENDING) {
+					new_order =  Gtk.SortType.DESCENDING;
+				} else {
+					new_order =  Gtk.SortType.ASCENDING;
+				}
+			}
+			aur_list.sort_by_state (new_order);
+			// force a display refresh
+			aur_treeview.queue_draw ();
+		}
+
+		[GtkCallback]
+		public void on_packages_version_column_clicked () {
+			Gtk.SortType new_order;
+			if (!packages_version_column.sort_indicator) {
 				new_order = Gtk.SortType.ASCENDING;
 			} else {
 				if (sortinfo.sort_type == Gtk.SortType.ASCENDING) {
@@ -816,9 +1245,26 @@ namespace Pamac {
 		}
 
 		[GtkCallback]
-		public void on_repo_column_clicked () {
+		public void on_aur_version_column_clicked () {
 			Gtk.SortType new_order;
-			if (repo_column.sort_indicator == false) {
+			if (!aur_version_column.sort_indicator) {
+				new_order = Gtk.SortType.ASCENDING;
+			} else {
+				if (sortinfo.sort_type == Gtk.SortType.ASCENDING) {
+					new_order =  Gtk.SortType.DESCENDING;
+				} else {
+					new_order =  Gtk.SortType.ASCENDING;
+				}
+			}
+			aur_list.sort_by_version (new_order);
+			// force a display refresh
+			aur_treeview.queue_draw ();
+		}
+
+		[GtkCallback]
+		public void on_packages_repo_column_clicked () {
+			Gtk.SortType new_order;
+			if (!packages_repo_column.sort_indicator) {
 				new_order = Gtk.SortType.ASCENDING;
 			} else {
 				if (sortinfo.sort_type == Gtk.SortType.ASCENDING) {
@@ -833,9 +1279,9 @@ namespace Pamac {
 		}
 
 		[GtkCallback]
-		public void on_size_column_clicked () {
+		public void on_packages_size_column_clicked () {
 			Gtk.SortType new_order;
-			if (size_column.sort_indicator == false) {
+			if (!packages_size_column.sort_indicator) {
 				new_order = Gtk.SortType.ASCENDING;
 			} else {
 				if (sortinfo.sort_type == Gtk.SortType.ASCENDING) {
@@ -849,57 +1295,50 @@ namespace Pamac {
 			packages_treeview.queue_draw ();
 		}
 
+		[GtkCallback]
+		public void on_aur_votes_column_clicked () {
+			Gtk.SortType new_order;
+			if (!aur_votes_column.sort_indicator) {
+				new_order = Gtk.SortType.ASCENDING;
+			} else {
+				if (sortinfo.sort_type == Gtk.SortType.ASCENDING) {
+					new_order =  Gtk.SortType.DESCENDING;
+				} else {
+					new_order =  Gtk.SortType.ASCENDING;
+				}
+			}
+			aur_list.sort_by_votes (new_order);
+			// force a display refresh
+			aur_treeview.queue_draw ();
+		}
+
 		[GtkCallback]
 		public void on_search_entry_activate () {
-			string search_string = search_entry.get_text ();
+			unowned string search_string = search_entry.get_text ();
 			if (search_string != "") {
 				this.get_window ().set_cursor (new Gdk.Cursor.for_display (Gdk.Display.get_default (), Gdk.CursorType.WATCH));
-				transaction.search_pkgs.begin (search_string, search_aur_button.get_active (), (obj, res) => {
-					var pkgs = transaction.search_pkgs.end (res);
-					if (pkgs.length != 0) {
-						// add search string in search_list if needed
-						bool found = false;
-						Gtk.TreeIter? iter;
-						Gtk.TreeModel model;
-						Gtk.TreeSelection selection = search_treeview.get_selection ();
-						// check if search string is already selected in search list
-						if (selection.get_selected (out model, out iter)) {
-							GLib.Value val;
-							model.get_value (iter, 0, out val);
-							string selected_string = val.get_string ();
-							if (selected_string == search_string) {
-								found = true;
-								// we need to populate packages_list
-								populate_packages_list (pkgs);
-							} else {
-								search_list.foreach ((_model, _path, _iter) => {
-									GLib.Value line;
-									model.get_value (_iter, 0, out line);
-									if ((string) line == search_string) {
-										found = true;
-										// block the signal to not populate when we select the iter in search_list
-										selection.changed.disconnect (on_search_treeview_selection_changed);
-										selection.select_iter (_iter);
-										selection.changed.connect_after (on_search_treeview_selection_changed);
-										populate_packages_list (pkgs);
-									}
-									return found;
-								});
-							}
-						}
-						if (found == false) {
-							search_list.insert_with_values (out iter, -1, 0, search_string);
-							// block the signal to not populate when we select the iter in search_list
-							selection.changed.disconnect (on_search_treeview_selection_changed);
-							selection.select_iter (iter);
-							selection.changed.connect_after (on_search_treeview_selection_changed);
-							populate_packages_list (pkgs);
-						}
-					} else {
-						// populate with empty lists
-						populate_packages_list (pkgs);
+				Gtk.TreeSelection selection = search_treeview.get_selection ();
+				// add search string in search_list if needed
+				bool found = false;
+				// check if search string is already selected in search list
+				search_list.foreach ((_model, _path, _iter) => {
+					GLib.Value line;
+					_model.get_value (_iter, 0, out line);
+					if ((string) line == search_string) {
+						found = true;
+						// we select the iter in search_list
+						// it will populate the list with the selection changed signal
+						selection.select_iter (_iter);
 					}
+					return found;
 				});
+				if (!found) {
+					Gtk.TreeIter? iter;
+					search_list.insert_with_values (out iter, -1, 0, search_string);
+					// we select the iter in search_list
+					// it will populate the list with the selection changed signal
+					selection.select_iter (iter);
+				}
 			}
 		}
 
@@ -918,10 +1357,24 @@ namespace Pamac {
 				GLib.Value val;
 				model.get_value (iter, 0, out val);
 				string search_string = val.get_string ();
-				transaction.search_pkgs.begin (search_string, search_aur_button.get_active (), (obj, res) => {
-					var pkgs = transaction.search_pkgs.end (res);
-					populate_packages_list (pkgs);
-				});
+				switch (packages_notebook.get_current_page ()) {
+					case 0:
+						search_all_dbs.begin (search_string, (obj, res) => {
+							var pkgs = search_all_dbs.end (res);
+							if (search_aur_button.get_active ()) {
+								search_in_aur.begin (search_string);
+							}
+							populate_packages_list ((owned) pkgs);
+						});
+						break;
+					case 1:
+						search_in_aur.begin (search_string, (obj, res) => {
+							populate_aur_list (aur_search_results.lookup (search_string));
+						});
+						break;
+					default:
+						break;
+				}
 			}
 		}
 
@@ -932,12 +1385,11 @@ namespace Pamac {
 			Gtk.TreeSelection selection = groups_treeview.get_selection ();
 			if (selection.get_selected (out model, out iter)) {
 				this.get_window ().set_cursor (new Gdk.Cursor.for_display (Gdk.Display.get_default (), Gdk.CursorType.WATCH));
-				GLib.Value val;
-				model.get_value (iter, 0, out val);
-				string grp_name = val.get_string ();
-				transaction.get_group_pkgs.begin (grp_name, (obj, res) => {
-					var pkgs = transaction.get_group_pkgs.end (res);
-					populate_packages_list (pkgs);
+				GLib.Value grp_name;
+				model.get_value (iter, 0, out grp_name);
+				get_group_pkgs.begin ((string) grp_name, (obj, res) => {
+					var pkgs = get_group_pkgs.end (res);
+					populate_packages_list ((owned) pkgs);
 				});
 			}
 		}
@@ -945,50 +1397,48 @@ namespace Pamac {
 		[GtkCallback]
 		public void on_states_treeview_selection_changed () {
 			Gtk.TreeModel model;
-			Gtk.TreeIter? iter;
+			Gtk.TreeIter? treeiter;
 			Gtk.TreeSelection selection = states_treeview.get_selection ();
-			if (selection.get_selected (out model, out iter)) {
+			if (selection.get_selected (out model, out treeiter)) {
 				this.get_window ().set_cursor (new Gdk.Cursor.for_display (Gdk.Display.get_default (), Gdk.CursorType.WATCH));
 				GLib.Value val;
-				model.get_value (iter, 0, out val);
-				string state = val.get_string ();
-				Pamac.Package[] pkgs = {};
-				Pamac.Package find_pkg;
+				model.get_value (treeiter, 0, out val);
+				unowned string state = val.get_string ();
 				if (state == dgettext (null, "To install")) {
-					foreach (string name in transaction.to_add) {
-						find_pkg = transaction.find_local_pkg (name);
-						if (find_pkg.name != "") {
-							pkgs += find_pkg;
-						} else {
-							find_pkg = transaction.find_sync_pkg (name);
-							if (find_pkg.name != "") {
-								pkgs += find_pkg;
-							}
+					var pkgs = new Alpm.List<unowned Alpm.Package?> ();
+					foreach (unowned string pkgname in transaction.to_add) {
+						unowned Alpm.Package? pkg = alpm_config.handle.localdb.get_pkg (pkgname);
+						if (pkg == null) {
+							pkg = get_sync_pkg (pkgname);
+						}
+						if (pkg != null) {
+							pkgs.add (pkg);
 						}
 					}
-					populate_packages_list (pkgs);
+					populate_packages_list ((owned) pkgs);
 				} else if (state == dgettext (null, "To remove")) {
-					foreach (string name in transaction.to_remove) {
-						find_pkg = transaction.find_local_pkg (name);
-						if (find_pkg.name != "") {
-							pkgs += find_pkg;
+					var pkgs = new Alpm.List<unowned Alpm.Package?> ();
+					foreach (unowned string pkgname in transaction.to_remove) {
+						unowned Alpm.Package? pkg = alpm_config.handle.localdb.get_pkg (pkgname);
+						if (pkg != null) {
+							pkgs.add (pkg);
 						}
 					}
-					populate_packages_list (pkgs);
+					populate_packages_list ((owned) pkgs);
 				} else if (state == dgettext (null, "Installed")) {
-					transaction.get_installed_pkgs.begin ((obj, res) => {
-						pkgs = transaction.get_installed_pkgs.end (res);
-						populate_packages_list (pkgs);
+					get_installed_pkgs.begin ((obj, res) => {
+						var pkgs = get_installed_pkgs.end (res);
+						populate_packages_list ((owned) pkgs);
 					});
 				} else if (state == dgettext (null, "Uninstalled")) {
-					//transaction.get_sync_pkgs.begin ((obj, res) => {
-						//pkgs = transaction.get_sync_pkgs.end (res);
-						//populate_packages_list (pkgs);
+					//get_sync_pkgs.begin ((obj, res) => {
+						//var pkgs = get_sync_pkgs.end (res);
+						//populate_packages_list ((owned) pkgs);
 					//});
 				} else if (state == dgettext (null, "Orphans")) {
-					transaction.get_orphans.begin ((obj, res) => {
-						pkgs = transaction.get_orphans.end (res);
-						populate_packages_list (pkgs);
+					get_orphans.begin ((obj, res) => {
+						var pkgs = get_orphans.end (res);
+						populate_packages_list ((owned) pkgs);
 					});
 				}
 			}
@@ -1003,16 +1453,16 @@ namespace Pamac {
 				this.get_window ().set_cursor (new Gdk.Cursor.for_display (Gdk.Display.get_default (), Gdk.CursorType.WATCH));
 				GLib.Value val;
 				model.get_value (iter, 0, out val);
-				string repo = val.get_string ();
+				unowned string repo = val.get_string ();
 				if (repo == dgettext (null, "local")) {
-					transaction.get_local_pkgs.begin ((obj, res) => {
-						var pkgs = transaction.get_local_pkgs.end (res);
-						populate_packages_list (pkgs);
+					get_local_pkgs.begin ((obj, res) => {
+						var pkgs = get_local_pkgs.end (res);
+						populate_packages_list ((owned) pkgs);
 					});
 				} else {
-					transaction.get_repo_pkgs.begin (repo, (obj, res) => {
-						var pkgs = transaction.get_repo_pkgs.end (res);
-						populate_packages_list (pkgs);
+					get_repo_pkgs.begin (repo, (obj, res) => {
+						var pkgs = get_repo_pkgs.end (res);
+						populate_packages_list ((owned) pkgs);
 					});
 				}
 			}
@@ -1074,7 +1524,7 @@ namespace Pamac {
 			if (chooser.run () == Gtk.ResponseType.ACCEPT) {
 				SList<string> packages_paths = chooser.get_filenames ();
 				if (packages_paths.length () != 0) {
-					foreach (string path in packages_paths) {
+					foreach (unowned string path in packages_paths) {
 						transaction.to_load.add (path);
 					}
 					this.get_window ().set_cursor (new Gdk.Cursor.for_display (Gdk.Display.get_default (), Gdk.CursorType.WATCH));
@@ -1096,7 +1546,7 @@ namespace Pamac {
 			SourceFunc callback = run_preferences_dialog.callback;
 			ulong handler_id = transaction.daemon.get_authorization_finished.connect ((authorized) => {
 				if (authorized) {
-					var preferences_dialog = new PreferencesDialog (transaction, this);
+					var preferences_dialog = new PreferencesDialog (this, transaction);
 					preferences_dialog.run ();
 					preferences_dialog.destroy ();
 					while (Gtk.events_pending ()) {
@@ -1140,21 +1590,24 @@ namespace Pamac {
 			set_buttons_sensitive (false);
 			// force a display refresh
 			packages_treeview.queue_draw ();
+			aur_treeview.queue_draw ();
 		}
 
 		[GtkCallback]
 		public void on_refresh_button_clicked () {
 			this.get_window ().set_cursor (new Gdk.Cursor.for_display (Gdk.Display.get_default (), Gdk.CursorType.WATCH));
-			transaction.start_refresh (0);
+			transaction.start_refresh (false);
 		}
 
-		public void on_transaction_finished (bool error) {
-			if (error == false) {
+		public void on_transaction_finished (bool database_modified) {
+			if (database_modified) {
 				set_buttons_sensitive (false);
+				refresh_handle ();
 				refresh_packages_list ();
+			} else {
+				this.get_window ().set_cursor (null);
 			}
 			transaction.to_load.remove_all ();
-			this.get_window ().set_cursor (null);
 		}
 	}
 }
diff --git a/src/mirrors_config.vala b/src/mirrors_config.vala
index 2c55dc5..c1c61ed 100644
--- a/src/mirrors_config.vala
+++ b/src/mirrors_config.vala
@@ -18,9 +18,10 @@
  */
 
 namespace Alpm {
+	[Compact]
 	public class MirrorsConfig: Object {
-		string conf_path;
-		string mirrorlists_dir;
+		public string conf_path;
+		public string mirrorlists_dir;
 		public string choosen_generation_method;
 		public string choosen_country;
 		public GLib.List<string> countrys;
@@ -47,9 +48,7 @@ namespace Alpm {
 				while ((file_info = enumerator.next_file ()) != null) {
 					countrys.append(file_info.get_name ());
 				}
-				countrys.sort ((a, b) => {
-					return strcmp (a, b);
-				});
+				countrys.sort (strcmp);
 			} catch (Error e) {
 				stderr.printf ("%s\n", e.message);
 			}
@@ -57,9 +56,7 @@ namespace Alpm {
 
 		public void parse_file (string path) {
 			var file = GLib.File.new_for_path (path);
-			if (file.query_exists () == false) {
-				GLib.stderr.printf ("File '%s' doesn't exist.\n", path);
-			} else {
+			if (file.query_exists ()) {
 				try {
 					// Open file for reading and wrap returned FileInputStream into a
 					// DataInputStream, so we can read line by line
@@ -76,11 +73,11 @@ namespace Alpm {
 						if (line.length == 0) {
 							continue;
 						}
-						splitted = line.split ("=");
-						string key = splitted[0].strip ();
-						string? val = null;
-						if (splitted[1] != null) {
-							val = splitted[1].strip ();
+						splitted = line.split ("=", 2);
+						unowned string key = splitted[0]._strip ();
+						unowned string? val = null;
+						if (splitted.length == 2) {
+							val = splitted[1]._strip ();
 						}
 						if (key == "Method") {
 							choosen_generation_method = val;
@@ -93,59 +90,60 @@ namespace Alpm {
 				} catch (Error e) {
 					GLib.stderr.printf("%s\n", e.message);
 				}
+			} else {
+				GLib.stderr.printf ("File '%s' doesn't exist.\n", path);
 			}
 		}
 
 		public void write (HashTable<string,Variant> new_conf) {
 			var file = GLib.File.new_for_path (conf_path);
-			if (file.query_exists () == false) {
-				GLib.stderr.printf ("File '%s' doesn't exist.\n", file.get_path ());
-			} else {
+			if (file.query_exists ()) {
 				try {
 					// Open file for reading and wrap returned FileInputStream into a
 					// DataInputStream, so we can read line by line
 					var dis = new DataInputStream (file.read ());
 					string? line;
-					string[] data = {};
+					var data = new GLib.List<string> ();
 					// Read lines until end of file (null) is reached
 					while ((line = dis.read_line ()) != null) {
 						if (line.length == 0) {
-							data += "\n";
+							data.append ("\n");
 							continue;
 						}
+						unowned Variant variant;
 						if (line.contains ("Method")) {
-							if (new_conf.contains ("Method")) {
-								string val = new_conf.get ("Method").get_string ();
-								data += "Method=%s\n".printf (val);
+							if (new_conf.lookup_extended ("Method", null, out variant)) {
+								data.append ("Method=%s\n".printf (variant.get_string ()));
 							} else {
-								data += line + "\n";
+								data.append (line + "\n");
 							}
 						} else if (line.contains ("OnlyCountry")) {
-							if (new_conf.contains ("OnlyCountry")) {
-								string val = new_conf.get ("OnlyCountry").get_string ();
-								if (val == dgettext (null, "Worldwide")) {
-									data += "#%s\n".printf (line);
+							if (new_conf.lookup_extended ("OnlyCountry", null, out variant)) {
+								if (variant.get_string () == dgettext (null, "Worldwide")) {
+									data.append ("#%s\n".printf (line));
 								} else {
-									data += "OnlyCountry=%s\n".printf (val);
+									data.append ("OnlyCountry=%s\n".printf (variant.get_string ()));
 								}
 							} else {
-								data += line + "\n";
+								data.append (line + "\n");
 							}
 						} else {
-							data += line + "\n";
+							data.append (line + "\n");
 						}
 					}
 					// delete the file before rewrite it
 					file.delete ();
 					// creating a DataOutputStream to the file
 					var dos = new DataOutputStream (file.create (FileCreateFlags.REPLACE_DESTINATION));
-					foreach (string new_line in data) {
+					foreach (unowned string new_line in data) {
 						// writing a short string to the stream
 						dos.put_string (new_line);
 					}
 				} catch (GLib.Error e) {
 					GLib.stderr.printf("%s\n", e.message);
 				}
+			} else {
+				GLib.stderr.printf ("File '%s' doesn't exist.\n", file.get_path ());
 			}
 		}
 	}
diff --git a/src/package.vala b/src/package.vala
index 44c6a7e..0c36423 100644
--- a/src/package.vala
+++ b/src/package.vala
@@ -31,12 +31,13 @@ namespace Pamac {
 
 		public Package (Alpm.Package? alpm_pkg, Json.Object? aur_json) {
 			if (alpm_pkg != null) {
-				name = alpm_pkg.name ?? "";
-				version = alpm_pkg.version ?? "";
-				desc = alpm_pkg.desc ?? "";
-				repo = (alpm_pkg.db != null ? (alpm_pkg.db.name ?? "") : "");
+				name = alpm_pkg.name;
+				version = alpm_pkg.version;
+				desc = alpm_pkg.desc;
+				repo = alpm_pkg.db != null ? alpm_pkg.db.name : "";
 				size = alpm_pkg.isize;
 				size_string = format_size (alpm_pkg.isize);
+				// alpm pkg url can be null
 				url = alpm_pkg.url ?? "";
 				StringBuilder licenses_build = new StringBuilder ();
 				foreach (var license in alpm_pkg.licenses) {
@@ -48,9 +49,9 @@ namespace Pamac {
 				licenses = licenses_build.str;
 				reason = alpm_pkg.reason;
 			} else if (aur_json != null ) {
-				name = aur_json.get_string_member ("Name") ?? "";
-				version = aur_json.get_string_member ("Version") ?? "";
-				desc = aur_json.get_string_member ("Description") ?? "";
+				name = aur_json.get_string_member ("Name");
+				version = aur_json.get_string_member ("Version");
+				desc = aur_json.get_string_member ("Description");
 				repo = "AUR";
 				size = 0;
 				size_string = "";
@@ -73,15 +74,9 @@ namespace Pamac {
 
 	public struct PackageDetails {
 		string repo;
-		// for AUR package it is OutOfDate
 		string has_signature;
-		// for AUR package it is NumVotes
 		int reason;
-		// for AUR package it is Maintainer
 		string packager;
-		// for AUR package it is FirstSubmitted
-		string build_date;
-		// for AUR package it is LastModified
 		string install_date;
 		string[] groups;
 		string[] backups;
diff --git a/src/packages_model.vala b/src/packages_model.vala
index 2650888..f03bb9c 100644
--- a/src/packages_model.vala
+++ b/src/packages_model.vala
@@ -20,21 +20,12 @@
 namespace Pamac {
 
 	public class PackagesModel : Object, Gtk.TreeModel {
-		private GLib.List<Pamac.Package?> all_pkgs;
-		public ManagerWindow manager_window;
+		private Alpm.List<unowned Alpm.Package?>? pkgs;
+		private ManagerWindow manager_window;
 
-		public PackagesModel (Pamac.Package[] pkgs, ManagerWindow manager_window) {
+		public PackagesModel (owned Alpm.List<unowned Alpm.Package?>? pkgs, ManagerWindow manager_window) {
 			this.manager_window = manager_window;
-			all_pkgs = new GLib.List<Pamac.Package?> ();
-			foreach (var pkg in pkgs) {
-				all_pkgs.append (pkg);
-			}
-			if (all_pkgs.length () == 0) {
-				// create a fake "No package found" package
-				var fake_pkg = Pamac.Package (null, null);
-				fake_pkg.name = dgettext (null, "No package found");
-				all_pkgs.append (fake_pkg);
-			}
+			this.pkgs = (owned) pkgs;
 		}
 
 		// TreeModel interface
@@ -57,16 +48,21 @@ namespace Pamac {
 		}
 
 		public void get_value (Gtk.TreeIter iter, int column, out Value val) {
-			Pamac.Package pkg = all_pkgs.nth_data (iter.stamp);
+			unowned Alpm.Package? pkg = pkgs.nth (iter.stamp).data;
 			switch (column) {
 				case 0:
 					val = Value (typeof (string));
-					val.set_string (pkg.name);
+					if (pkg == null) {
+						val.set_string (dgettext (null, "No package found"));
+					} else {
+						val.set_string (pkg.name);
+					}
 					break;
 				case 1:
 					val = Value (typeof (Object));
-						if (pkg.repo == "local") {
-							if (manager_window.transaction.should_hold (pkg.name)) {
+					if (pkg != null) {
+						if (pkg.origin == Alpm.Package.From.LOCALDB) {
+							if (manager_window.alpm_config.holdpkgs.find_custom (pkg.name, strcmp) != null) {
 								val.set_object (manager_window.locked_icon);
 							} else if (manager_window.transaction.to_add.contains (pkg.name)) {
 								val.set_object (manager_window.to_reinstall_icon);
@@ -75,32 +71,30 @@ namespace Pamac {
 							} else {
 								val.set_object (manager_window.installed_icon);
 							}
-						} else if (pkg.repo == "AUR") {
-							if (manager_window.transaction.to_build.contains (pkg.name)) {
-								val.set_object (manager_window.to_install_icon);
-							} else {
-								val.set_object (manager_window.uninstalled_icon);
-							}
-						} else if (pkg.name == dgettext (null, "No package found")) {
-							// nothing to do
-							break;
 						} else if (manager_window.transaction.to_add.contains (pkg.name)) {
 							val.set_object (manager_window.to_install_icon);
 						} else {
 							val.set_object (manager_window.uninstalled_icon);
 						}
+					}
 					break;
 				case 2:
 					val = Value (typeof (string));
-					val.set_string (pkg.version);
+					if (pkg != null) {
+						val.set_string (pkg.version);
+					}
 					break;
 				case 3:
 					val = Value (typeof (string));
-					val.set_string (pkg.repo);
+					if (pkg != null) {
+						val.set_string (pkg.db.name);
+					}
 					break;
 				case 4:
 					val = Value (typeof (string));
-					val.set_string (pkg.size_string);
+					if (pkg != null) {
+						val.set_string (format_size (pkg.isize));
+					}
 					break;
 				default:
 					val = Value (Type.INVALID);
@@ -109,7 +103,7 @@ namespace Pamac {
 		}
 
 		public bool get_iter (out Gtk.TreeIter iter, Gtk.TreePath path) {;
-			if (path.get_depth () != 1 || all_pkgs.length () == 0) {
+			if (path.get_depth () != 1) {
 				return invalid_iter (out iter);
 			}
 			iter = Gtk.TreeIter ();
@@ -133,7 +127,7 @@ namespace Pamac {
 
 		public bool iter_next (ref Gtk.TreeIter iter) {
 			int pos = (iter.stamp) + 1;
-			if (pos >= all_pkgs.length ()) {
+			if (pos >= pkgs.length) {
 				return false;
 			}
 			iter.stamp = pos;
@@ -172,109 +166,82 @@ namespace Pamac {
 		}
 
 		// custom get pkg function
-		public Pamac.Package get_pkg_at_path (Gtk.TreePath path) {
-			return all_pkgs.nth_data (path.get_indices ()[0]);
+		public unowned Alpm.Package? get_pkg_at_path (Gtk.TreePath path) {
+			return pkgs.nth (path.get_indices ()[0]).data;
 		}
 
 		// custom sort functions
 		public void sort_by_name (Gtk.SortType order) {
-			CompareFunc<Pamac.Package?> namecmp = (pkg_a, pkg_b) => {
-				return strcmp (pkg_a.name, pkg_b.name);
-			};
-			all_pkgs.sort (namecmp);
+			pkgs.sort ((Alpm.List.CompareFunc) compare_name);
 			if (order == Gtk.SortType.DESCENDING) {
-				all_pkgs.reverse ();
+				pkgs.reverse ();
 			}
-			manager_window.name_column.sort_order = order;
-			manager_window.state_column.sort_indicator = false;
-			manager_window.name_column.sort_indicator = true;
-			manager_window.version_column.sort_indicator = false;
-			manager_window.repo_column.sort_indicator = false;
-			manager_window.size_column.sort_indicator = false;
+			manager_window.packages_name_column.sort_order = order;
+			manager_window.packages_state_column.sort_indicator = false;
+			manager_window.packages_name_column.sort_indicator = true;
+			manager_window.packages_version_column.sort_indicator = false;
+			manager_window.packages_repo_column.sort_indicator = false;
+			manager_window.packages_size_column.sort_indicator = false;
 			manager_window.sortinfo.column_number = 0;
 			manager_window.sortinfo.sort_type = order;
 		}
 
 		public void sort_by_state (Gtk.SortType order) {
-			CompareFunc<Pamac.Package?> statecmp = (pkg_a, pkg_b) => {
-				int state_a;
-				int state_b;
-					if (pkg_a.repo == "local") {
-						state_a = 0;
-					} else {
-						state_a = 1;
-					}
-					if (pkg_b.repo == "local") {
-						state_b = 0;
-					} else {
-						state_b = 1;
-					}
-				return (int) (state_a > state_b) - (int) (state_a < state_b);
-			};
-			all_pkgs.sort (statecmp);
+			pkgs.sort ((Alpm.List.CompareFunc) compare_state);
 			if (order == Gtk.SortType.DESCENDING) {
-				all_pkgs.reverse ();
+				pkgs.reverse ();
 			}
-			manager_window.state_column.sort_order = order;
-			manager_window.state_column.sort_indicator = true;
-			manager_window.name_column.sort_indicator = false;
-			manager_window.version_column.sort_indicator = false;
-			manager_window.repo_column.sort_indicator = false;
-			manager_window.size_column.sort_indicator = false;
+			manager_window.packages_state_column.sort_order = order;
+			manager_window.packages_state_column.sort_indicator = true;
+			manager_window.packages_name_column.sort_indicator = false;
+			manager_window.packages_version_column.sort_indicator = false;
+			manager_window.packages_repo_column.sort_indicator = false;
+			manager_window.packages_size_column.sort_indicator = false;
 			manager_window.sortinfo.column_number = 1;
 			manager_window.sortinfo.sort_type = order;
 		}
 
 		public void sort_by_version (Gtk.SortType order) {
-			CompareFunc<Pamac.Package?> versioncmp = (pkg_a, pkg_b) => {
-				return Alpm.pkg_vercmp (pkg_a.version, pkg_b.version);
-			};
-			all_pkgs.sort (versioncmp);
+			pkgs.sort ((Alpm.List.CompareFunc) compare_version);
 			if (order == Gtk.SortType.DESCENDING) {
-				all_pkgs.reverse ();
+				pkgs.reverse ();
 			}
-			manager_window.version_column.sort_order = order;
-			manager_window.state_column.sort_indicator = false;
-			manager_window.name_column.sort_indicator = false;
-			manager_window.version_column.sort_indicator = true;
-			manager_window.repo_column.sort_indicator = false;
-			manager_window.size_column.sort_indicator = false;
+			manager_window.packages_version_column.sort_order = order;
+			manager_window.packages_state_column.sort_indicator = false;
+			manager_window.packages_name_column.sort_indicator = false;
+			manager_window.packages_version_column.sort_indicator = true;
+			manager_window.packages_repo_column.sort_indicator = false;
+			manager_window.packages_size_column.sort_indicator = false;
 			manager_window.sortinfo.column_number = 2;
 			manager_window.sortinfo.sort_type = order;
 		}
 
 		public void sort_by_repo (Gtk.SortType order) {
-			CompareFunc<Pamac.Package?> repocmp = (pkg_a, pkg_b) => {
-				return strcmp (pkg_a.repo, pkg_b.repo);
-			};
-			all_pkgs.sort (repocmp);
+			pkgs.sort ((Alpm.List.CompareFunc) compare_repo);
 			if (order == Gtk.SortType.DESCENDING) {
-				all_pkgs.reverse ();
+				pkgs.reverse ();
 			}
-			manager_window.repo_column.sort_order = order;
-			manager_window.state_column.sort_indicator = false;
-			manager_window.name_column.sort_indicator = false;
-			manager_window.version_column.sort_indicator = false;
-			manager_window.repo_column.sort_indicator = true;
-			manager_window.size_column.sort_indicator = false;
+			manager_window.packages_repo_column.sort_order = order;
+			manager_window.packages_state_column.sort_indicator = false;
+			manager_window.packages_name_column.sort_indicator = false;
+			manager_window.packages_version_column.sort_indicator = false;
+			manager_window.packages_repo_column.sort_indicator = true;
+			manager_window.packages_size_column.sort_indicator = false;
 			manager_window.sortinfo.column_number = 3;
 			manager_window.sortinfo.sort_type = order;
 		}
 
 		public void sort_by_size (Gtk.SortType order) {
-			CompareFunc<Pamac.Package?> sizecmp = (pkg_a, pkg_b) => {
-				return (int) (pkg_a.size > pkg_b.size) - (int) (pkg_a.size < pkg_b.size);
-			};
-			all_pkgs.sort (sizecmp);
+			pkgs.sort ((Alpm.List.CompareFunc) compare_size);
 			if (order == Gtk.SortType.DESCENDING) {
-				all_pkgs.reverse ();
+				pkgs.reverse ();
 			}
-			manager_window.size_column.sort_order = order;
-			manager_window.state_column.sort_indicator = false;
-			manager_window.name_column.sort_indicator = false;
-			manager_window.version_column.sort_indicator = false;
-			manager_window.repo_column.sort_indicator = false;
-			manager_window.size_column.sort_indicator = true;
+			manager_window.packages_size_column.sort_order = order;
+			manager_window.packages_state_column.sort_indicator = false;
+			manager_window.packages_name_column.sort_indicator = false;
+			manager_window.packages_version_column.sort_indicator = false;
+			manager_window.packages_repo_column.sort_indicator = false;
+			manager_window.packages_size_column.sort_indicator = true;
 			manager_window.sortinfo.column_number = 4;
 			manager_window.sortinfo.sort_type = order;
 		}
diff --git a/src/pamac_config.vala b/src/pamac_config.vala
index da48648..ad9eb1e 100644
--- a/src/pamac_config.vala
+++ b/src/pamac_config.vala
@@ -17,19 +17,47 @@
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+const string VERSION = "3.0.0";
+
 namespace Pamac {
-	public class Config: Object {
-		string conf_path;
+	[Compact]
+	public class Config {
+		public string conf_path;
 		public bool recurse;
-		public int refresh_period;
+		public uint64 refresh_period;
 		public bool no_update_hide_icon;
 		public bool enable_aur;
 		public bool search_aur;
 		public bool check_aur_updates;
 		public bool no_confirm_build;
+		public HashTable<string,string> environment_variables;
 
 		public Config (string path) {
 			conf_path = path;
+			//get environment variables
+			environment_variables = new HashTable<string,string> (str_hash, str_equal);
+			var utsname = Posix.utsname();
+			environment_variables.insert ("HTTP_USER_AGENT", "pamac/%s (%s %s)".printf (VERSION, utsname.sysname, utsname.machine));
+			unowned string? variable = Environment.get_variable ("http_proxy");
+			if (variable != null) {
+				environment_variables.insert ("http_proxy", variable);
+			}
+			variable = Environment.get_variable ("https_proxy");
+			if (variable != null) {
+				environment_variables.insert ("https_proxy", variable);
+			}
+			variable = Environment.get_variable ("ftp_proxy");
+			if (variable != null) {
+				environment_variables.insert ("ftp_proxy", variable);
+			}
+			variable = Environment.get_variable ("socks_proxy");
+			if (variable != null) {
+				environment_variables.insert ("socks_proxy", variable);
+			}
+			variable = Environment.get_variable ("no_proxy");
+			if (variable != null) {
+				environment_variables.insert ("no_proxy", variable);
+			}
 			// set default option
 			refresh_period = 6;
 			reload ();
@@ -65,16 +93,15 @@ namespace Pamac {
 						if (line.length == 0) {
 							continue;
 						}
-						splitted = line.split ("=");
-						string key = splitted[0].strip ();
-						string? val = null;
-						if (splitted[1] != null) {
-							val = splitted[1].strip ();
-						}
+						splitted = line.split ("=", 2);
+						unowned string key = splitted[0]._strip ();
 						if (key == "RemoveUnrequiredDeps") {
 							recurse = true;
 						} else if (key == "RefreshPeriod") {
-							refresh_period = int.parse (val);
+							if (splitted.length == 2) {
+								unowned string val = splitted[1]._strip ();
+								refresh_period = uint64.parse (val);
+							}
 						} else if (key == "NoUpdateHideIcon") {
 							no_update_hide_icon = true;
 						} else if (key == "EnableAUR") {
@@ -97,7 +124,7 @@ namespace Pamac {
 
 		public void write (HashTable<string,Variant> new_conf) {
 			var file = GLib.File.new_for_path (conf_path);
-			string[] data = {};
+			var data = new GLib.List<string> ();
 			if (file.query_exists ()) {
 				try {
 					// Open file for reading and wrap returned FileInputStream into a
@@ -107,91 +134,85 @@ namespace Pamac {
 					// Read lines until end of file (null) is reached
 					while ((line = dis.read_line ()) != null) {
 						if (line.length == 0) {
-							data += "\n";
+							data.append ("\n");
 							continue;
 						}
+						unowned Variant variant;
 						if (line.contains ("RemoveUnrequiredDeps")) {
-							if (new_conf.contains ("RemoveUnrequiredDeps")) {
-								bool val = new_conf.get ("RemoveUnrequiredDeps").get_boolean ();
-								if (val == true) {
-									data += "RemoveUnrequiredDeps\n";
+							if (new_conf.lookup_extended ("RemoveUnrequiredDeps", null, out variant)) {
+								if (variant.get_boolean ()) {
+									data.append ("RemoveUnrequiredDeps\n");
 								} else {
-									data += "#RemoveUnrequiredDeps\n";
+									data.append ("#RemoveUnrequiredDeps\n");
 								}
 								new_conf.remove ("RemoveUnrequiredDeps");
 							} else {
-								data += line + "\n";
+								data.append (line + "\n");
 							}
 						} else if (line.contains ("RefreshPeriod")) {
-							if (new_conf.contains ("RefreshPeriod")) {
-								int val = new_conf.get ("RefreshPeriod").get_int32 ();
-								data += "RefreshPeriod = %u\n".printf (val);
+							if (new_conf.lookup_extended ("RefreshPeriod", null, out variant)) {
+								data.append ("RefreshPeriod = %llu\n".printf (variant.get_uint64 ()));
 								new_conf.remove ("RefreshPeriod");
 							} else {
-								data += line + "\n";
+								data.append (line + "\n");
 							}
 						} else if (line.contains ("NoUpdateHideIcon")) {
-							if (new_conf.contains ("NoUpdateHideIcon")) {
-								bool val = new_conf.get ("NoUpdateHideIcon").get_boolean ();
-								if (val == true) {
-									data += "NoUpdateHideIcon\n";
+							if (new_conf.lookup_extended ("NoUpdateHideIcon", null, out variant)) {
+								if (variant.get_boolean ()) {
+									data.append ("NoUpdateHideIcon\n");
 								} else {
-									data += "#NoUpdateHideIcon\n";
+									data.append ("#NoUpdateHideIcon\n");
 								}
 								new_conf.remove ("NoUpdateHideIcon");
 							} else {
-								data += line + "\n";
+								data.append (line + "\n");
 							}
 						} else if (line.contains ("EnableAUR")) {
-							if (new_conf.contains ("EnableAUR")) {
-								bool val = new_conf.get ("EnableAUR").get_boolean ();
-								if (val == true) {
-									data += "EnableAUR\n";
+							if (new_conf.lookup_extended ("EnableAUR", null, out variant)) {
+								if (variant.get_boolean ()) {
+									data.append ("EnableAUR\n");
 								} else {
-									data += "#EnableAUR\n";
+									data.append ("#EnableAUR\n");
 								}
 								new_conf.remove ("EnableAUR");
 							} else {
-								data += line + "\n";
+								data.append (line + "\n");
 							}
 						} else if (line.contains ("SearchInAURByDefault")) {
-							if (new_conf.contains ("SearchInAURByDefault")) {
-								bool val = new_conf.get ("SearchInAURByDefault").get_boolean ();
-								if (val == true) {
-									data += "SearchInAURByDefault\n";
+							if (new_conf.lookup_extended ("SearchInAURByDefault", null, out variant)) {
+								if (variant.get_boolean ()) {
+									data.append ("SearchInAURByDefault\n");
 								} else {
-									data += "#SearchInAURByDefault\n";
+									data.append ("#SearchInAURByDefault\n");
 								}
 								new_conf.remove ("SearchInAURByDefault");
 							} else {
-								data += line + "\n";
+								data.append (line + "\n");
 							}
 						} else if (line.contains ("CheckAURUpdates")) {
-							if (new_conf.contains ("CheckAURUpdates")) {
-								bool val = new_conf.get ("CheckAURUpdates").get_boolean ();
-								if (val == true) {
-									data += "CheckAURUpdates\n";
+							if (new_conf.lookup_extended ("CheckAURUpdates", null, out variant)) {
+								if (variant.get_boolean ()) {
+									data.append ("CheckAURUpdates\n");
 								} else {
-									data += "#CheckAURUpdates\n";
+									data.append ("#CheckAURUpdates\n");
 								}
 								new_conf.remove ("CheckAURUpdates");
 							} else {
-								data += line + "\n";
+								data.append (line + "\n");
 							}
 						} else if (line.contains ("NoConfirmBuild")) {
-							if (new_conf.contains ("NoConfirmBuild")) {
-								bool val = new_conf.get ("NoConfirmBuild").get_boolean ();
-								if (val == true) {
-									data += "NoConfirmBuild\n";
+							if (new_conf.lookup_extended ("NoConfirmBuild", null, out variant)) {
+								if (variant.get_boolean ()) {
+									data.append ("NoConfirmBuild\n");
 								} else {
-									data += "#NoConfirmBuild\n";
+									data.append ("#NoConfirmBuild\n");
 								}
 								new_conf.remove ("NoConfirmBuild");
 							} else {
-								data += line + "\n";
+								data.append (line + "\n");
 							}
 						} else {
-							data += line + "\n";
+							data.append (line + "\n");
 						}
 					}
 					// delete the file before rewrite it
@@ -204,54 +225,57 @@ namespace Pamac {
 			}
 			// create lines for unexisted options
 			if (new_conf.size () != 0) {
-				data += "\n";
-				new_conf.foreach ((key, val) => {
+				data.append ("\n");
+				var iter = HashTableIter<string,Variant> (new_conf);
+				unowned string key;
+				unowned Variant val;
+				while (iter.next (out key, out val)) {
 					if (key == "RemoveUnrequiredDeps") {
-						if (val.get_boolean () == true) {
-							data += "RemoveUnrequiredDeps\n";
+						if (val.get_boolean ()) {
+							data.append ("RemoveUnrequiredDeps\n");
 						} else {
-							data += "#RemoveUnrequiredDeps\n";
+							data.append ("#RemoveUnrequiredDeps\n");
 						}
 					} else if (key == "RefreshPeriod") {
-						data += "RefreshPeriod = %u\n".printf (val.get_int32 ());
+						data.append ("RefreshPeriod = %llu\n".printf (val.get_uint64 ()));
 					} else if (key =="NoUpdateHideIcon") {
-						if (val.get_boolean () == true) {
-							data += "NoUpdateHideIcon\n";
+						if (val.get_boolean ()) {
+							data.append ("NoUpdateHideIcon\n");
 						} else {
-							data += "#NoUpdateHideIcon\n";
+							data.append ("#NoUpdateHideIcon\n");
 						}
 					} else if (key == "EnableAUR") {
-						if (val.get_boolean () == true) {
-							data += "EnableAUR\n";
+						if (val.get_boolean ()) {
+							data.append ("EnableAUR\n");
 						} else {
-							data += "#EnableAUR\n";
+							data.append ("#EnableAUR\n");
 						}
 					} else if (key == "SearchInAURByDefault") {
-						if (val.get_boolean () == true) {
-							data += "SearchInAURByDefault\n";
+						if (val.get_boolean ()) {
+							data.append ("SearchInAURByDefault\n");
 						} else {
-							data += "#SearchInAURByDefault\n";
+							data.append ("#SearchInAURByDefault\n");
 						}
 					} else if (key == "CheckAURUpdates") {
-						if (val.get_boolean () == true) {
-							data += "CheckAURUpdates\n";
+						if (val.get_boolean ()) {
+							data.append ("CheckAURUpdates\n");
 						} else {
-							data += "#CheckAURUpdates\n";
+							data.append ("#CheckAURUpdates\n");
 						}
 					} else if (key == "NoConfirmBuild") {
-						if (val.get_boolean () == true) {
-							data += "NoConfirmBuild\n";
+						if (val.get_boolean ()) {
+							data.append ("NoConfirmBuild\n");
 						} else {
-							data += "#NoConfirmBuild\n";
+							data.append ("#NoConfirmBuild\n");
 						}
 					}
-				});
+				}
 			}
 			// write the file
 			try {
 				// creating a DataOutputStream to the file
 				var dos = new DataOutputStream (file.create (FileCreateFlags.REPLACE_DESTINATION));
-				foreach (string new_line in data) {
+				foreach (unowned string new_line in data) {
 					// writing a short string to the stream
 					dos.put_string (new_line);
 				}
diff --git a/src/preferences_dialog.vala b/src/preferences_dialog.vala
index 244a50c..58f2db1 100644
--- a/src/preferences_dialog.vala
+++ b/src/preferences_dialog.vala
@@ -60,17 +60,22 @@ namespace Pamac {
 		public Gtk.CheckButton no_confirm_build_checkbutton;
 
 		Transaction transaction;
-		int previous_refresh_period;
+		Alpm.Config alpm_config;
+		uint64 previous_refresh_period;
 
-		public PreferencesDialog (Transaction transaction, Gtk.ApplicationWindow? window) {
+		public PreferencesDialog (Gtk.ApplicationWindow? window, Transaction transaction) {
 			Object (transient_for: window, use_header_bar: 0);
 
 			this.transaction = transaction;
+			alpm_config = new Alpm.Config ("/etc/pacman.conf");
+			alpm_config.get_handle ();
+			if (alpm_config.handle == null) {
+				stderr.printf (dgettext (null, "Failed to initialize alpm library"));
+			}
 			refresh_period_label.set_markup (dgettext (null, "How often to check for updates, value in hours") +":");
-			var pamac_config = new Pamac.Config ("/etc/pamac.conf");
-			remove_unrequired_deps_button.active = pamac_config.recurse;
-			check_space_button.active = transaction.get_checkspace ();
-			if (pamac_config.refresh_period == 0) {
+			remove_unrequired_deps_button.active = transaction.pamac_config.recurse;
+			check_space_button.active = (alpm_config.checkspace == 1);
+			if (transaction.pamac_config.refresh_period == 0) {
 				check_updates_button.active = false;
 				refresh_period_label.sensitive = false;
 				// set default value
@@ -81,15 +86,15 @@ namespace Pamac {
 				ignorepkgs_box.sensitive = false;
 			} else {
 				check_updates_button.active = true;
-				refresh_period_spin_button.value = pamac_config.refresh_period;
-				previous_refresh_period = pamac_config.refresh_period;
+				refresh_period_spin_button.value = transaction.pamac_config.refresh_period;
+				previous_refresh_period = transaction.pamac_config.refresh_period;
 			}
-			no_update_hide_icon_checkbutton.active = pamac_config.no_update_hide_icon;
+			no_update_hide_icon_checkbutton.active = transaction.pamac_config.no_update_hide_icon;
 
 			// populate ignorepkgs_liststore
 			Gtk.TreeIter iter;
-			foreach (var name in transaction.get_ignorepkgs ()) {
-				ignorepkgs_liststore.insert_with_values (out iter, -1, 0, name);
+			for (unowned Alpm.List<string> list = alpm_config.ignorepkgs; list != null; list = list.next ()) {
+				ignorepkgs_liststore.insert_with_values (out iter, -1, 0, list.data);
 			}
 			remove_unrequired_deps_button.state_set.connect (on_remove_unrequired_deps_button_state_set);
 			check_space_button.state_set.connect (on_check_space_button_state_set);
@@ -98,8 +103,8 @@ namespace Pamac {
 			no_update_hide_icon_checkbutton.toggled.connect (on_no_update_hide_icon_checkbutton_toggled);
 			transaction.daemon.write_pamac_config_finished.connect (on_write_pamac_config_finished);
 
-			Pamac.Package pkg = this.transaction.find_local_satisfier ("pacman-mirrorlist");
-			if (pkg.name == "") {
+			unowned Alpm.Package? pkg = Alpm.find_satisfier (alpm_config.handle.localdb.pkgcache, "pacman-mirrorlist");
+			if (pkg == null) {
 				mirrors_config_box.visible = false;
 			} else {
 				var mirrors_config = new Alpm.MirrorsConfig ("/etc/pacman-mirrors.conf");
@@ -107,7 +112,7 @@ namespace Pamac {
 				mirrors_country_comboboxtext.active = 0;
 				int index = 1;
 				mirrors_config.get_countrys ();
-				foreach (string country in mirrors_config.countrys) {
+				foreach (unowned string country in mirrors_config.countrys) {
 					mirrors_country_comboboxtext.append_text (country);
 					if (country == mirrors_config.choosen_country) {
 						mirrors_country_comboboxtext.active = index;
@@ -126,17 +131,17 @@ namespace Pamac {
 				transaction.daemon.write_mirrors_config_finished.connect (on_write_mirrors_config_finished);
 			}
 
-			pkg = this.transaction.find_local_satisfier ("yaourt");
-			if (pkg.name == "") {
+			pkg = Alpm.find_satisfier (alpm_config.handle.localdb.pkgcache, "yaourt");
+			if (pkg == null) {
 				aur_config_box.visible = false;
 			} else {
-				enable_aur_button.active = pamac_config.enable_aur;
-				search_aur_checkbutton.active = pamac_config.search_aur;
-				search_aur_checkbutton.sensitive = pamac_config.enable_aur;
-				check_aur_updates_checkbutton.active = pamac_config.check_aur_updates;
-				check_aur_updates_checkbutton.sensitive = pamac_config.enable_aur;
-				no_confirm_build_checkbutton.active = pamac_config.no_confirm_build;
-				no_confirm_build_checkbutton.sensitive = pamac_config.enable_aur;
+				enable_aur_button.active = transaction.pamac_config.enable_aur;
+				search_aur_checkbutton.active = transaction.pamac_config.search_aur;
+				search_aur_checkbutton.sensitive = transaction.pamac_config.enable_aur;
+				check_aur_updates_checkbutton.active = transaction.pamac_config.check_aur_updates;
+				check_aur_updates_checkbutton.sensitive = transaction.pamac_config.enable_aur;
+				no_confirm_build_checkbutton.active = transaction.pamac_config.no_confirm_build;
+				no_confirm_build_checkbutton.sensitive = transaction.pamac_config.enable_aur;
 				enable_aur_button.state_set.connect (on_enable_aur_button_state_set);
 				search_aur_checkbutton.toggled.connect (on_search_aur_checkbutton_toggled);
 				check_aur_updates_checkbutton.toggled.connect (on_check_aur_updates_checkbutton_toggled);
@@ -158,10 +163,10 @@ namespace Pamac {
 			refresh_period_spin_button.sensitive = new_state;
 			no_update_hide_icon_checkbutton.sensitive = new_state;
 			ignorepkgs_box.sensitive = new_state;
-			if (new_state == true) {
-				new_pamac_conf.insert ("RefreshPeriod", new Variant.int32 (previous_refresh_period));
+			if (new_state) {
+				new_pamac_conf.insert ("RefreshPeriod", new Variant.uint64 (previous_refresh_period));
 			} else {
-				new_pamac_conf.insert ("RefreshPeriod", new Variant.int32 (0));
+				new_pamac_conf.insert ("RefreshPeriod", new Variant.uint64 (0));
 			}
 			transaction.start_write_pamac_config (new_pamac_conf);
 			return true;
@@ -204,7 +209,7 @@ namespace Pamac {
 			transaction.start_write_pamac_config (new_pamac_conf);
 		}
 
-		void on_write_pamac_config_finished (bool recurse, int refresh_period, bool no_update_hide_icon,
+		void on_write_pamac_config_finished (bool recurse, uint64 refresh_period, bool no_update_hide_icon,
 											bool enable_aur, bool search_aur, bool check_aur_updates,
 											bool no_confirm_build) {
 			remove_unrequired_deps_button.state = recurse;
@@ -248,7 +253,15 @@ namespace Pamac {
 
 		[GtkCallback]
 		void on_add_ignorepkgs_button_clicked () {
-			var choose_ignorepkgs_dialog = new ChooseIgnorepkgsDialog (this, transaction);
+			var choose_ignorepkgs_dialog = new ChooseIgnorepkgsDialog (this);
+			foreach (var pkg in alpm_config.handle.localdb.pkgcache) {
+				Gtk.TreeIter iter;
+				if (alpm_config.ignorepkgs.find_str (pkg.name) == null) {
+					choose_ignorepkgs_dialog.pkgs_list.insert_with_values (out iter, -1, 0, false, 1, pkg.name);
+				} else {
+					choose_ignorepkgs_dialog.pkgs_list.insert_with_values (out iter, -1, 0, true, 1, pkg.name);
+				}
+			}
 			if (choose_ignorepkgs_dialog.run () == Gtk.ResponseType.OK) {
 				var ignorepkg_string = new StringBuilder ();
 				choose_ignorepkgs_dialog.pkgs_list.foreach ((model, path, iter) => {
@@ -257,7 +270,7 @@ namespace Pamac {
 					bool selected = val.get_boolean ();
 					if (selected) {
 						choose_ignorepkgs_dialog.pkgs_list.get_value (iter, 1, out val);
-						string name = val.get_string ();
+						unowned string name = val.get_string ();
 						if (ignorepkg_string.len != 0) {
 							ignorepkg_string.append (" ");
 						}
@@ -287,7 +300,7 @@ namespace Pamac {
 				ignorepkgs_liststore.foreach ((model, path, iter) => {
 					GLib.Value val;
 					ignorepkgs_liststore.get_value (iter, 0, out val);
-					string name = val.get_string ();
+					unowned string name = val.get_string ();
 					if (ignorepkg_string.len != 0) {
 						ignorepkg_string.append (" ");
 					}
@@ -305,8 +318,8 @@ namespace Pamac {
 			// re-populate ignorepkgs_liststore
 			Gtk.TreeIter iter;
 			ignorepkgs_liststore.clear ();
-			foreach (var name in transaction.get_ignorepkgs ()) {
-				ignorepkgs_liststore.insert_with_values (out iter, -1, 0, name);
+			for (unowned Alpm.List<string> list = alpm_config.ignorepkgs; list != null; list = list.next ()) {
+				ignorepkgs_liststore.insert_with_values (out iter, -1, 0, list.data);
 			}
 		}
 
@@ -331,7 +344,7 @@ namespace Pamac {
 			mirrors_country_comboboxtext.model.foreach ((model, path, iter) => {
 				GLib.Value val;
 				model.get_value (iter, 0, out val);
-				string country = val.get_string ();
+				unowned string country = val.get_string ();
 				if (choosen_country == country) {
 					return true;
 				}
diff --git a/src/progress_dialog.vala b/src/progress_dialog.vala
index 81fd124..8a94332 100644
--- a/src/progress_dialog.vala
+++ b/src/progress_dialog.vala
@@ -33,14 +33,12 @@ namespace Pamac {
 		[GtkChild]
 		public Gtk.Expander expander;
 
-		Transaction transaction;
 		public Vte.Terminal term;
 		Vte.Pty pty;
 
-		public ProgressDialog (Transaction transaction, Gtk.ApplicationWindow? window) {
+		public ProgressDialog (Gtk.ApplicationWindow? window) {
 			Object (transient_for: window, use_header_bar: 0);
 
-			this.transaction = transaction;
 			//creating terminal
 			term = new Vte.Terminal ();
 			term.scroll_on_output = false;
@@ -72,18 +70,6 @@ namespace Pamac {
 			}
 		}
 
-		[GtkCallback]
-		public void on_cancel_button_clicked () {
-			transaction.cancel ();
-			transaction.clear_lists ();
-			spawn_in_term ({"/usr/bin/echo", dgettext (null, "Transaction cancelled") + ".\n"});
-			this.hide ();
-			transaction.finished (false);
-			while (Gtk.events_pending ()) {
-				Gtk.main_iteration ();
-			}
-		}
-
 		public void spawn_in_term (string[] args, out Pid child_pid = null) {
 			Pid intern_pid;
 			try {
diff --git a/src/refresh.vala b/src/refresh.vala
index b3997ce..fd2c5bc 100644
--- a/src/refresh.vala
+++ b/src/refresh.vala
@@ -1,7 +1,7 @@
 /*
  *  pamac-vala
  *
- *  Copyright (C) 2014-2015 Guillaume Benoit <guillaume@manjaro.org>
+ *  Copyright (C) 2014-2016 Guillaume Benoit <guillaume@manjaro.org>
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -24,10 +24,10 @@ namespace Pamac {
 	}
 	[DBus (name = "org.manjaro.pamac")]
 	public interface Daemon : Object {
-		public abstract void start_refresh (int force) throws IOError;
+		public abstract void start_refresh (bool force) throws IOError;
 		[DBus (no_reply = true)]
 		public abstract void quit () throws IOError;
-		public signal void refresh_finished (ErrorInfos error);
+		public signal void refresh_finished (bool success);
 	}
 }
 
@@ -84,10 +84,9 @@ int main () {
 	if (pamac_config.refresh_period != 0) {
 		if (!check_pamac_running ()) {
 			try {
-				pamac_daemon = Bus.get_proxy_sync (BusType.SYSTEM, "org.manjaro.pamac",
-														"/org/manjaro/pamac");
+				pamac_daemon = Bus.get_proxy_sync (BusType.SYSTEM, "org.manjaro.pamac", "/org/manjaro/pamac");
 				pamac_daemon.refresh_finished.connect (on_refresh_finished);
-				pamac_daemon.start_refresh (0);
+				pamac_daemon.start_refresh (false);
 				loop = new MainLoop ();
 				loop.run ();
 			} catch (IOError e) {
diff --git a/src/transaction.vala b/src/transaction.vala
index cae7d48..1cbfd94 100644
--- a/src/transaction.vala
+++ b/src/transaction.vala
@@ -20,61 +20,47 @@
 namespace Pamac {
 	[DBus (name = "org.manjaro.pamac")]
 	public interface Daemon : Object {
+		public abstract void set_environment_variables (HashTable<string,string> variables) throws IOError;
+		public abstract ErrorInfos get_current_error () throws IOError;
 		public abstract void start_get_authorization () throws IOError;
 		public abstract void start_write_pamac_config (HashTable<string,Variant> new_pamac_conf) throws IOError;
 		public abstract void start_write_alpm_config (HashTable<string,Variant> new_alpm_conf) throws IOError;
 		public abstract void start_write_mirrors_config (HashTable<string,Variant> new_mirrors_conf) throws IOError;
 		public abstract void start_generate_mirrors_list () throws IOError;
 		public abstract void start_set_pkgreason (string pkgname, uint reason) throws IOError;
-		public abstract void start_refresh (int force) throws IOError;
-		public abstract bool get_checkspace () throws IOError;
-		public abstract string[] get_ignorepkgs () throws IOError;
+		public abstract PackageInfos get_installed_pkg (string pkgname) throws IOError;
+		public abstract void start_refresh (bool force) throws IOError;
 		public abstract void add_ignorepkg (string pkgname) throws IOError;
 		public abstract void remove_ignorepkg (string pkgname) throws IOError;
-		public abstract bool should_hold (string pkgname) throws IOError;
-		public abstract async Pamac.Package[] get_all_pkgs () throws IOError;
-		public abstract async Pamac.Package[] get_installed_pkgs () throws IOError;
-		public abstract async Pamac.Package[] get_local_pkgs () throws IOError;
-		public abstract async Pamac.Package[] get_orphans () throws IOError;
-		public abstract Pamac.Package find_local_pkg (string pkgname) throws IOError;
-		public abstract Pamac.Package find_local_satisfier (string pkgname) throws IOError;
-		public abstract Pamac.Package find_sync_pkg (string pkgname) throws IOError;
-		public abstract async Pamac.Package[] search_pkgs (string search_string, bool search_from_aur) throws IOError;
-		public abstract string[] get_repos_names () throws IOError;
-		public abstract async Pamac.Package[] get_repo_pkgs (string repo) throws IOError;
-		public abstract string[] get_groups_names () throws IOError;
-		public abstract async Pamac.Package[] get_group_pkgs (string group_name) throws IOError;
-		public abstract string[] get_pkg_files (string pkgname) throws IOError;
-		public abstract string[] get_pkg_uninstalled_optdeps (string pkgname) throws IOError;
-		public abstract PackageDeps get_pkg_deps (string pkgname) throws IOError;
-		public abstract PackageDetails get_pkg_details (string pkgname) throws IOError;
-		public abstract async Updates get_updates (bool check_aur_updates) throws IOError;
-		public abstract ErrorInfos trans_init (Alpm.TransFlag transflags) throws IOError;
-		public abstract ErrorInfos trans_sysupgrade (int enable_downgrade) throws IOError;
-		public abstract ErrorInfos trans_add_pkg (string pkgname) throws IOError;
-		public abstract ErrorInfos trans_remove_pkg (string pkgname) throws IOError;
-		public abstract ErrorInfos trans_load_pkg (string pkgpath) throws IOError;
+		public abstract void start_get_updates (bool check_aur_updates) throws IOError;
+		public abstract bool trans_init (Alpm.TransFlag transflags) throws IOError;
+		public abstract bool trans_sysupgrade (bool enable_downgrade) throws IOError;
+		public abstract bool trans_add_pkg (string pkgname) throws IOError;
+		public abstract bool trans_remove_pkg (string pkgname) throws IOError;
+		public abstract bool trans_load_pkg (string pkgpath) throws IOError;
 		public abstract void start_trans_prepare () throws IOError;
 		public abstract void choose_provider (int provider) throws IOError;
-		public abstract UpdateInfos[] trans_to_add () throws IOError;
-		public abstract UpdateInfos[] trans_to_remove () throws IOError;
+		public abstract PackageInfos[] trans_to_add () throws IOError;
+		public abstract PackageInfos[] trans_to_remove () throws IOError;
 		public abstract void start_trans_commit () throws IOError;
-		public abstract int trans_release () throws IOError;
+		public abstract void trans_release () throws IOError;
+		[DBus (no_reply = true)]
 		public abstract void trans_cancel () throws IOError;
 		[DBus (no_reply = true)]
 		public abstract void quit () throws IOError;
 		public signal void emit_event (uint primary_event, uint secondary_event, string[] details);
 		public signal void emit_providers (string depend, string[] providers);
-		public signal void emit_progress (uint progress, string pkgname, int percent, uint n_targets, uint current_target);
+		public signal void emit_progress (uint progress, string pkgname, uint percent, uint n_targets, uint current_target);
 		public signal void emit_download (string filename, uint64 xfered, uint64 total);
 		public signal void emit_totaldownload (uint64 total);
 		public signal void emit_log (uint level, string msg);
 		public signal void set_pkgreason_finished ();
-		public signal void refresh_finished (ErrorInfos error);
-		public signal void trans_prepare_finished (ErrorInfos error);
-		public signal void trans_commit_finished (ErrorInfos error);
+		public signal void refresh_finished (bool success);
+		public signal void get_updates_finished (Updates updates);
+		public signal void trans_prepare_finished (bool success);
+		public signal void trans_commit_finished (bool success);
 		public signal void get_authorization_finished (bool authorized);
-		public signal void write_pamac_config_finished (bool recurse, int refresh_period, bool no_update_hide_icon,
+		public signal void write_pamac_config_finished (bool recurse, uint64 refresh_period, bool no_update_hide_icon,
 														bool enable_aur, bool search_aur, bool check_aur_updates,
 														bool no_confirm_build);
 		public signal void write_alpm_config_finished (bool checkspace);
@@ -83,22 +69,24 @@ namespace Pamac {
 		public signal void generate_mirrors_list_finished ();
 	}
 
+	public enum Mode {
+		MANAGER,
+		UPDATER
+	}
+
 	public enum TransactionType {
 		STANDARD = (1 << 0),
 		UPDATE = (1 << 1),
 		BUILD = (1 << 2)
 	}
 
-	public enum Mode {
-		MANAGER,
-		UPDATER
-	}
-
 	public class Transaction: Object {
 		public Daemon daemon;
 
+		public Pamac.Config pamac_config;
+
 		public Alpm.TransFlag flags;
-		// those hashtables will be used as set
+
 		public GenericSet<string?> to_add;
 		public GenericSet<string?> to_remove;
 		public GenericSet<string?> to_load;
@@ -111,25 +99,31 @@ namespace Pamac {
 		uint64 already_downloaded;
 		string previous_label;
 		string previous_textbar;
-		double previous_percent;
+		float previous_percent;
 		string previous_filename;
 		uint pulse_timeout_id;
 		bool sysupgrade_after_trans;
-		int build_status;
-		int enable_downgrade;
+		bool enable_downgrade;
+		uint64 previous_xfered;
+		uint64 download_rate;
+		uint64 rates_nb;
+		Timer timer;
 
 		//dialogs
 		TransactionSumDialog transaction_sum_dialog;
 		TransactionInfoDialog transaction_info_dialog;
 		ProgressDialog progress_dialog;
 		//parent window
-		Gtk.ApplicationWindow? window;
+		Gtk.ApplicationWindow? application_window;
 
-		public signal void finished (bool with_error);
-		public signal void support_aur (bool enable_aur, bool search_aur);
+		public signal void finished (bool database_modified);
 
-		public Transaction (Gtk.ApplicationWindow? window) {
+		public Transaction (Gtk.ApplicationWindow? application_window) {
+			pamac_config = new Pamac.Config ("/etc/pamac.conf");
 			flags = Alpm.TransFlag.CASCADE;
+			if (pamac_config.recurse) {
+				flags |= Alpm.TransFlag.RECURSE;
+			}
 			to_add = new GenericSet<string?> (str_hash, str_equal);
 			to_remove = new GenericSet<string?> (str_hash, str_equal);
 			to_load = new GenericSet<string?> (str_hash, str_equal);
@@ -137,21 +131,28 @@ namespace Pamac {
 			special_ignorepkgs = new GenericSet<string?> (str_hash, str_equal);
 			connecting_dbus_signals ();
 			//creating dialogs
-			this.window = window;
-			transaction_sum_dialog = new TransactionSumDialog (window);
-			transaction_info_dialog = new TransactionInfoDialog (window);
-			progress_dialog = new ProgressDialog (this, window);
+			this.application_window = application_window;
+			transaction_sum_dialog = new TransactionSumDialog (application_window);
+			transaction_info_dialog = new TransactionInfoDialog (application_window);
+			progress_dialog = new ProgressDialog (application_window);
+			progress_dialog.cancel_button.clicked.connect (on_cancel_button_clicked);
 			// connect to child_exited signal which will only be emit after a call to watch_child
 			progress_dialog.term.child_exited.connect (on_term_child_exited);
 			// progress data
-			total_download = 0;
-			already_downloaded = 0;
 			previous_label = "";
 			previous_textbar = "";
-			previous_percent = 0.0;
 			previous_filename = "";
 			sysupgrade_after_trans = false;
-			build_status = 0;
+			timer = new Timer ();
+		}
+
+		public ErrorInfos get_current_error () {
+			try {
+				return daemon.get_current_error ();
+			} catch (IOError e) {
+				stderr.printf ("IOError: %s\n", e.message);
+				return ErrorInfos ();
+			}
 		}
 
 		public void start_get_authorization () {
@@ -205,6 +206,7 @@ namespace Pamac {
 				daemon.start_generate_mirrors_list ();
 			} catch (IOError e) {
 				stderr.printf ("IOError: %s\n", e.message);
+				Source.remove (pulse_timeout_id);
 			}
 		}
 
@@ -216,7 +218,7 @@ namespace Pamac {
 			}
 		}
 
-		public void start_refresh (int force) {
+		public void start_refresh (bool force) {
 			string action = dgettext (null, "Synchronizing package databases") + "...";
 			progress_dialog.spawn_in_term ({"echo", action});
 			progress_dialog.action_label.set_text (action);
@@ -234,33 +236,23 @@ namespace Pamac {
 			} catch (IOError e) {
 				stderr.printf ("IOError: %s\n", e.message);
 				daemon.refresh_finished.disconnect (on_refresh_finished);
+				finished (true);
 			}
 		}
 
-		public bool get_checkspace () {
-			bool checkspace = false;
+		public void start_get_updates () {
 			try {
-				checkspace = daemon.get_checkspace ();
+				daemon.start_get_updates (pamac_config.enable_aur && pamac_config.check_aur_updates);
 			} catch (IOError e) {
 				stderr.printf ("IOError: %s\n", e.message);
+				finished (false);
 			}
-			return checkspace;
-		}
-
-		public string[] get_ignorepkgs () {
-			string[] ignorepkgs = {};
-			try {
-				ignorepkgs = daemon.get_ignorepkgs ();
-			} catch (IOError e) {
-				stderr.printf ("IOError: %s\n", e.message);
-			}
-			return ignorepkgs;
 		}
 
 		public void add_ignorepkg (string pkgname) {
 			try {
 				daemon.add_ignorepkg (pkgname);
-				special_ignorepkgs.add (pkgname);
+				//special_ignorepkgs.add (pkgname);
 			} catch (IOError e) {
 				stderr.printf ("IOError: %s\n", e.message);
 			}
@@ -274,214 +266,30 @@ namespace Pamac {
 			}
 		}
 
-		public bool should_hold (string pkgname) {
-			bool should_hold = false;
-			try {
-				should_hold = daemon.should_hold (pkgname);
-			} catch (IOError e) {
-				stderr.printf ("IOError: %s\n", e.message);
-			}
-			return should_hold;
-		}
-
-		public async Pamac.Package[] get_all_pkgs () {
-			Pamac.Package[] pkgs = {};
-			try {
-				pkgs = yield daemon.get_all_pkgs ();
-			} catch (IOError e) {
-				stderr.printf ("IOError: %s\n", e.message);
-			}
-			return pkgs;
-		}
-
-		public async Pamac.Package[] get_installed_pkgs () {
-			Pamac.Package[] pkgs = {};
-			try {
-				pkgs = yield daemon.get_installed_pkgs ();
-			} catch (IOError e) {
-				stderr.printf ("IOError: %s\n", e.message);
-			}
-			return pkgs;
-		}
-
-		public async Pamac.Package[] get_local_pkgs () {
-			Pamac.Package[] pkgs = {};
-			try {
-				pkgs = yield daemon.get_local_pkgs ();
-			} catch (IOError e) {
-				stderr.printf ("IOError: %s\n", e.message);
-			}
-			return pkgs;
-		}
-
-		public async Pamac.Package[] get_orphans () {
-			Pamac.Package[] pkgs = {};
-			try {
-				pkgs = yield daemon.get_orphans ();
-			} catch (IOError e) {
-				stderr.printf ("IOError: %s\n", e.message);
-			}
-			return pkgs;
-		}
-
-		public Pamac.Package find_local_pkg (string pkgname) {
-			var pkg = Pamac.Package (null, null);
-			try {
-				pkg = daemon.find_local_pkg (pkgname);
-			} catch (IOError e) {
-				stderr.printf ("IOError: %s\n", e.message);
-			}
-			return pkg;
-		}
-
-		public Pamac.Package find_local_satisfier (string pkgname) {
-			var pkg = Pamac.Package (null, null);
-			try {
-				pkg = daemon.find_local_satisfier (pkgname);
-			} catch (IOError e) {
-				stderr.printf ("IOError: %s\n", e.message);
-			}
-			return pkg;
-		}
-
-		public Pamac.Package find_sync_pkg (string pkgname) {
-			var pkg = Pamac.Package (null, null);
-			try {
-				pkg = daemon.find_sync_pkg (pkgname);
-			} catch (IOError e) {
-				stderr.printf ("IOError: %s\n", e.message);
-			}
-			return pkg;
-		}
-
-		public async Pamac.Package[] search_pkgs (string search_string, bool search_aur) {
-			Pamac.Package[] pkgs = {};
-			try {
-				pkgs = yield daemon.search_pkgs (search_string, search_aur);
-			} catch (IOError e) {
-				stderr.printf ("IOError: %s\n", e.message);
-			}
-			return pkgs;
-		}
-
-		public string[] get_repos_names () {
-			string[] repos_names = {};
-			try {
-				repos_names = daemon.get_repos_names ();
-			} catch (IOError e) {
-				stderr.printf ("IOError: %s\n", e.message);
-			}
-			return repos_names;
-		}
-
-		public async Pamac.Package[] get_repo_pkgs (string repo) {
-			Pamac.Package[] pkgs = {};
-			try {
-				pkgs = yield daemon.get_repo_pkgs (repo);
-			} catch (IOError e) {
-				stderr.printf ("IOError: %s\n", e.message);
-			}
-			return pkgs;
-		}
-
-		public string[] get_groups_names () {
-			string[] groups_names = {};
-			try {
-				groups_names = daemon.get_groups_names ();
-			} catch (IOError e) {
-				stderr.printf ("IOError: %s\n", e.message);
-			}
-			return groups_names;
-		}
-
-		public async Pamac.Package[] get_group_pkgs (string group_name) {
-			Pamac.Package[] pkgs = {};
-			try {
-				pkgs = yield daemon.get_group_pkgs (group_name);
-			} catch (IOError e) {
-				stderr.printf ("IOError: %s\n", e.message);
-			}
-			return pkgs;
-		}
-
-		public string[] get_pkg_files (string pkgname) {
-			string[] files = {};
-			try {
-				files = daemon.get_pkg_files (pkgname);
-			} catch (IOError e) {
-				stderr.printf ("IOError: %s\n", e.message);
-			}
-			return files;
-		}
-
-		public string[] get_pkg_uninstalled_optdeps (string pkgname) {
-			string[] optdeps = {};
-			try {
-				optdeps = daemon.get_pkg_uninstalled_optdeps (pkgname);
-			} catch (IOError e) {
-				stderr.printf ("IOError: %s\n", e.message);
-			}
-			return optdeps;
-		}
-
-		public PackageDeps get_pkg_deps (string pkgname) {
-			var deps = PackageDeps ();
-			try {
-				deps = daemon.get_pkg_deps (pkgname);
-			} catch (IOError e) {
-				stderr.printf ("IOError: %s\n", e.message);
-			}
-			return deps;
-		}
-
-		public PackageDetails get_pkg_details (string pkgname) {
-			var details = PackageDetails ();
-			try {
-				details = daemon.get_pkg_details (pkgname);
-			} catch (IOError e) {
-				stderr.printf ("IOError: %s\n", e.message);
-			}
-			return details;
-		}
-
-		public async Updates get_updates () {
-			var updates = Updates ();
-			var pamac_config = new Pamac.Config ("/etc/pamac.conf");
-			try {
-				updates = yield daemon.get_updates (pamac_config.enable_aur && pamac_config.check_aur_updates);
-			} catch (IOError e) {
-				stderr.printf ("IOError: %s\n", e.message);
-			}
-			return updates;
-		}
-
-		public ErrorInfos init () {
-			var err = ErrorInfos ();
-			foreach (string pkgname in special_ignorepkgs) {
+		public bool init (Alpm.TransFlag flags) {
+			foreach (unowned string pkgname in special_ignorepkgs) {
 				add_ignorepkg (pkgname);
 			}
 			try {
-				err = daemon.trans_init (0);
+				return daemon.trans_init (flags);
 			} catch (IOError e) {
 				stderr.printf ("IOError: %s\n", e.message);
+				return false;
 			}
-			return err;
 		}
 
-		public void sysupgrade_simple (int enable_downgrade) {
+		public void sysupgrade_simple (bool enable_downgrade) {
 			progress_dialog.progressbar.set_fraction (0);
 			progress_dialog.cancel_button.set_visible (true);
-			var err = init ();
-			if (err.message != "") {
-				finished (true);
-				handle_error (err);
-			} else {
+			bool success = init (0);
+			if (success) {
 				try {
-					err = daemon.trans_sysupgrade (enable_downgrade);
+					success = daemon.trans_sysupgrade (enable_downgrade);
 				} catch (IOError e) {
 					stderr.printf ("IOError: %s\n", e.message);
+					success = false;
 				}
-				if (err.message == "") {
+				if (success) {
 					progress_dialog.show ();
 					while (Gtk.events_pending ()) {
 						Gtk.main_iteration ();
@@ -490,16 +298,20 @@ namespace Pamac {
 						daemon.start_trans_prepare ();
 					} catch (IOError e) {
 						stderr.printf ("IOError: %s\n", e.message);
+						finished (false);
 					}
 				} else {
 					release ();
-					finished (true);
-					handle_error (err);
+					finished (false);
+					handle_error (get_current_error ());
 				}
+			} else {
+				finished (false);
+				handle_error (get_current_error ());
 			}
 		}
 
-		public void sysupgrade (int enable_downgrade) {
+		public void sysupgrade (bool enable_downgrade) {
 			this.enable_downgrade = enable_downgrade;
 			string action = dgettext (null, "Starting full system upgrade") + "...";
 			progress_dialog.spawn_in_term ({"echo", action});
@@ -512,40 +324,42 @@ namespace Pamac {
 				Gtk.main_iteration ();
 			}
 			// sysupgrade
-			get_updates.begin ((obj, res) => {
-				Updates updates = get_updates.end (res);
-				// get syncfirst updates
-				if (updates.is_syncfirst) {
+			daemon.get_updates_finished.connect (on_get_updates_finished);
+			start_get_updates ();
+		}
+
+		public void on_get_updates_finished (Updates updates) {
+			// get syncfirst updates
+			if (updates.is_syncfirst) {
+				clear_lists ();
+				if (mode == Mode.MANAGER) {
+					sysupgrade_after_trans = true;
+				}
+				foreach (unowned PackageInfos infos in updates.repos_updates) {
+					to_add.add (infos.name);
+				}
+				// run as a standard transaction
+				run ();
+			} else {
+				if (updates.aur_updates.length != 0) {
 					clear_lists ();
-					if (mode == Mode.MANAGER) {
-						sysupgrade_after_trans = true;
-					}
-					foreach (UpdateInfos infos in updates.repos_updates) {
-						to_add.add (infos.name);
-					}
-					// run as a standard transaction
-					run ();
-				} else {
-					if (updates.aur_updates.length != 0) {
-						clear_lists ();
-						foreach (UpdateInfos infos in updates.aur_updates) {
-							if ((infos.name in special_ignorepkgs) == false) {
-								to_build.add (infos.name);
-							}
+					foreach (unowned PackageInfos infos in updates.aur_updates) {
+						if (!(infos.name in special_ignorepkgs)) {
+							to_build.add (infos.name);
 						}
 					}
-					if (updates.repos_updates.length != 0) {
-						sysupgrade_simple (enable_downgrade);
-					} else {
-						progress_dialog.show ();
-						while (Gtk.events_pending ()) {
-							Gtk.main_iteration ();
-						}
-						var err = ErrorInfos ();
-						on_trans_prepare_finished (err);
-					}
 				}
-			});
+				if (updates.repos_updates.length != 0) {
+					sysupgrade_simple (enable_downgrade);
+				} else {
+					progress_dialog.show ();
+					while (Gtk.events_pending ()) {
+						Gtk.main_iteration ();
+					}
+					on_trans_prepare_finished (true);
+				}
+			}
+			daemon.get_updates_finished.disconnect (on_get_updates_finished);
 		}
 
 		public void clear_lists () {
@@ -567,70 +381,77 @@ namespace Pamac {
 				Gtk.main_iteration ();
 			}
 			// run
-			var err = ErrorInfos ();
 			if (to_add.length == 0
 					&& to_remove.length == 0
 					&& to_load.length == 0
 					&& to_build.length != 0) {
 				// there only AUR packages to build so no need to prepare transaction
-				on_trans_prepare_finished (err);
+				on_trans_prepare_finished (true);
 			} else {
+				bool success = false;
 				try {
-					err = daemon.trans_init (flags);
+					success = daemon.trans_init (flags);
 				} catch (IOError e) {
 					stderr.printf ("IOError: %s\n", e.message);
 				}
-				if (err.message != "") {
-					finished (true);
-					handle_error (err);
-				} else {
-					foreach (string name in to_add) {
+				if (success) {
+					success = false;
+					foreach (unowned string name in to_add) {
 						try {
-							err = daemon.trans_add_pkg (name);
+							success = daemon.trans_add_pkg (name);
 						} catch (IOError e) {
 							stderr.printf ("IOError: %s\n", e.message);
 						}
-						if (err.message != "") {
+						if (!success) {
 							break;
 						}
 					}
-					foreach (string name in to_remove) {
+					foreach (unowned string name in to_remove) {
 						try {
-							err = daemon.trans_remove_pkg (name);
+							success = daemon.trans_remove_pkg (name);
 						} catch (IOError e) {
 							stderr.printf ("IOError: %s\n", e.message);
 						}
-						if (err.message != "") {
+						if (!success) {
 							break;
 						}
 					}
-					foreach (string path in to_load) {
+					foreach (unowned string path in to_load) {
 						try {
-							err = daemon.trans_load_pkg (path);
+							success = daemon.trans_load_pkg (path);
 						} catch (IOError e) {
 							stderr.printf ("IOError: %s\n", e.message);
 						}
-						if (err.message != "") {
+						if (!success) {
 							break;
 						}
 					}
-					if (err.message == "") {
+					if (success) {
 						try {
 							daemon.start_trans_prepare ();
 						} catch (IOError e) {
 							stderr.printf ("IOError: %s\n", e.message);
+							finished (false);
 						}
 					} else {
 						release ();
-						finished (true);
-						handle_error (err);
+						finished (false);
+						handle_error (get_current_error ());
 					}
+				} else {
+					finished (false);
+					handle_error (get_current_error ());
 				}
 			}
 		}
 
 		public void choose_provider (string depend, string[] providers) {
-			var choose_provider_dialog = new ChooseProviderDialog (depend, providers, window);
+			var choose_provider_dialog = new ChooseProviderDialog (application_window);
+			choose_provider_dialog.label.set_markup ("<b>%s</b>".printf (dgettext (null, "Choose a provider for %s").printf (depend)));
+			foreach (unowned string provider in providers) {
+				choose_provider_dialog.comboboxtext.append_text (provider);
+			}
+			choose_provider_dialog.comboboxtext.active = 0;
 			choose_provider_dialog.run ();
 			try {
 				daemon.choose_provider (choose_provider_dialog.comboboxtext.active);
@@ -647,8 +468,8 @@ namespace Pamac {
 			// return 0 if transaction_sum is empty, 2, if there are only aur updates, 1 otherwise
 			TransactionType type = 0;
 			uint64 dsize = 0;
-			UpdateInfos[] prepared_to_add = {};
-			UpdateInfos[] prepared_to_remove = {};
+			PackageInfos[] prepared_to_add = {};
+			PackageInfos[] prepared_to_remove = {};
 			string[] to_downgrade = {};
 			string[] to_install = {};
 			string[] to_reinstall = {};
@@ -663,23 +484,27 @@ namespace Pamac {
 			} catch (IOError e) {
 				stderr.printf ("IOError: %s\n", e.message);
 			}
-			foreach (UpdateInfos pkg_info in prepared_to_add) {
+			foreach (unowned PackageInfos pkg_info in prepared_to_add) {
 				dsize += pkg_info.download_size;
-				Pamac.Package local_pkg = find_local_pkg (pkg_info.name);
-				if (local_pkg.name == "") {
-					to_install += "%s %s".printf (pkg_info.name, pkg_info.version);
-				} else {
-					int cmp = Alpm.pkg_vercmp (pkg_info.version, local_pkg.version);
-					if (cmp == 1) {
-						to_update += "%s %s".printf (pkg_info.name, pkg_info.version);
-					} else if (cmp == 0) {
-						to_reinstall += "%s %s".printf (pkg_info.name, pkg_info.version);
+				try {
+					PackageInfos local_pkg_info = daemon.get_installed_pkg (pkg_info.name);
+					if (local_pkg_info.name == "") {
+						to_install += "%s %s".printf (pkg_info.name, pkg_info.version);
 					} else {
-						to_downgrade += "%s %s".printf (pkg_info.name, pkg_info.version);
+						int cmp = Alpm.pkg_vercmp (pkg_info.version, local_pkg_info.version);
+						if (cmp == 1) {
+							to_update += "%s %s".printf (pkg_info.name, pkg_info.version);
+						} else if (cmp == 0) {
+							to_reinstall += "%s %s".printf (pkg_info.name, pkg_info.version);
+						} else {
+							to_downgrade += "%s %s".printf (pkg_info.name, pkg_info.version);
+						}
 					}
+				} catch (IOError e) {
+					stderr.printf ("IOError: %s\n", e.message);
 				}
 			}
-			foreach (string name in to_build) {
+			foreach (unowned string name in to_build) {
 				_to_build += name;
 			}
 			int len = prepared_to_remove.length;
@@ -778,6 +603,7 @@ namespace Pamac {
 				daemon.start_trans_commit ();
 			} catch (IOError e) {
 				stderr.printf ("IOError: %s\n", e.message);
+				finished (true);
 			}
 		}
 
@@ -794,11 +620,10 @@ namespace Pamac {
 			progress_dialog.term.grab_focus ();
 			pulse_timeout_id = Timeout.add (500, (GLib.SourceFunc) progress_dialog.progressbar.pulse);
 			string[] cmds = {"yaourt", "-S"};
-			var pamac_config = new Pamac.Config ("/etc/pamac.conf");
 			if (pamac_config.no_confirm_build) {
 				cmds += "--noconfirm";
 			}
-			foreach (string name in to_build) {
+			foreach (unowned string name in to_build) {
 				cmds += name;
 			}
 			Pid child_pid;
@@ -813,6 +638,12 @@ namespace Pamac {
 			} catch (IOError e) {
 				stderr.printf ("IOError: %s\n", e.message);
 			}
+			progress_dialog.expander.set_expanded (false);
+			Gtk.TextIter start_iter;
+			Gtk.TextIter end_iter;
+			transaction_info_dialog.textbuffer.get_start_iter (out start_iter);
+			transaction_info_dialog.textbuffer.get_end_iter (out end_iter);
+			transaction_info_dialog.textbuffer.delete (ref start_iter, ref end_iter);
 		}
 
 		public void release () {
@@ -821,7 +652,7 @@ namespace Pamac {
 			} catch (IOError e) {
 				stderr.printf ("IOError: %s\n", e.message);
 			}
-			foreach (string pkgname in special_ignorepkgs) {
+			foreach (unowned string pkgname in special_ignorepkgs) {
 				remove_ignorepkg (pkgname);
 			}
 		}
@@ -837,6 +668,26 @@ namespace Pamac {
 		void on_emit_event (uint primary_event, uint secondary_event, string[] details) {
 			string msg;
 			switch (primary_event) {
+				case Alpm.Event.Type.HOOK_START:
+					switch (secondary_event) {
+						case Alpm.HookWhen.PRE_TRANSACTION:
+							msg = dgettext (null, "Running pre-transaction hooks") + "...";
+							progress_dialog.action_label.set_text (msg);
+							progress_dialog.spawn_in_term ({"echo", msg});
+							break;
+						case Alpm.HookWhen.POST_TRANSACTION:
+							msg = dgettext (null, "Running post-transaction hooks") + "...";
+							progress_dialog.action_label.set_text (msg);
+							progress_dialog.spawn_in_term ({"echo", msg});
+							break;
+						default:
+							break;
+					}
+					break;
+				case Alpm.Event.Type.HOOK_RUN_START:
+					msg = "%s:%s %s/%s".printf (details[0], details[1], details[2], details[3]);
+					progress_dialog.spawn_in_term ({"echo", msg});
+					break;
 				case Alpm.Event.Type.CHECKDEPS_START:
 					msg = dgettext (null, "Checking dependencies") + "...";
 					progress_dialog.action_label.set_text (msg);
@@ -857,10 +708,12 @@ namespace Pamac {
 					progress_dialog.action_label.set_text (msg);
 					progress_dialog.spawn_in_term ({"echo", msg});
 					break;
+				case Alpm.Event.Type.TRANSACTION_START:
+					progress_dialog.cancel_button.set_visible (false);
+					break;
 				case Alpm.Event.Type.PACKAGE_OPERATION_START:
 					switch (secondary_event) {
 						case Alpm.Package.Operation.INSTALL:
-							progress_dialog.cancel_button.set_visible (false);
 							previous_filename = details[0];
 							msg = dgettext (null, "Installing %s").printf (details[0]) + "...";
 							progress_dialog.action_label.set_text (msg);
@@ -868,7 +721,6 @@ namespace Pamac {
 							progress_dialog.spawn_in_term ({"echo", msg});
 							break;
 						case Alpm.Package.Operation.REINSTALL:
-							progress_dialog.cancel_button.set_visible (false);
 							previous_filename = details[0];
 							msg = dgettext (null, "Reinstalling %s").printf (details[0]) + "...";
 							progress_dialog.action_label.set_text (msg);
@@ -876,7 +728,6 @@ namespace Pamac {
 							progress_dialog.spawn_in_term ({"echo", msg});
 							break;
 						case Alpm.Package.Operation.REMOVE:
-							progress_dialog.cancel_button.set_visible (false);
 							previous_filename = details[0];
 							msg = dgettext (null, "Removing %s").printf (details[0]) + "...";
 							progress_dialog.action_label.set_text (msg);
@@ -884,7 +735,6 @@ namespace Pamac {
 							progress_dialog.spawn_in_term ({"echo", msg});
 							break;
 						case Alpm.Package.Operation.UPGRADE:
-							progress_dialog.cancel_button.set_visible (false);
 							previous_filename = details[0];
 							msg = dgettext (null, "Upgrading %s").printf (details[0]) + "...";
 							progress_dialog.action_label.set_text (msg);
@@ -892,7 +742,6 @@ namespace Pamac {
 							progress_dialog.spawn_in_term ({"echo", msg});
 							break;
 						case Alpm.Package.Operation.DOWNGRADE:
-							progress_dialog.cancel_button.set_visible (false);
 							previous_filename = details[0];
 							msg = dgettext (null, "Downgrading %s").printf (details[0]) + "...";
 							progress_dialog.action_label.set_text (msg);
@@ -980,9 +829,6 @@ namespace Pamac {
 				case Alpm.Event.Type.PACSAVE_CREATED:
 					progress_dialog.spawn_in_term ({"echo", dgettext (null, "%s installed as %s.pacsave").printf (details[0])});
 					break;
-				case Alpm.Event.Type.PACORIG_CREATED:
-					progress_dialog.spawn_in_term ({"echo", dgettext (null, "%s installed as %s.pacorig").printf (details[0])});
-					break;
 				default:
 					break;
 			}
@@ -995,15 +841,15 @@ namespace Pamac {
 			choose_provider (depend, providers);
 		}
 
-		void on_emit_progress (uint progress, string pkgname, int percent, uint n_targets, uint current_target) {
-			double fraction;
+		void on_emit_progress (uint progress, string pkgname, uint percent, uint n_targets, uint current_target) {
+			float fraction;
 			switch (progress) {
 				case Alpm.Progress.ADD_START:
 				case Alpm.Progress.UPGRADE_START:
 				case Alpm.Progress.DOWNGRADE_START:
 				case Alpm.Progress.REINSTALL_START:
 				case Alpm.Progress.REMOVE_START:
-					fraction = ((float) (current_target-1)/n_targets)+((float) percent/(100*n_targets));
+					fraction = ((float) (current_target - 1) / n_targets) + ((float) percent / (100 * n_targets));
 					break;
 				case Alpm.Progress.CONFLICTS_START:
 				case Alpm.Progress.DISKSPACE_START:
@@ -1011,7 +857,7 @@ namespace Pamac {
 				case Alpm.Progress.KEYRING_START:
 				case Alpm.Progress.LOAD_START:
 				default:
-					fraction = (float) percent/100;
+					fraction = (float) percent / 100;
 					break;
 			}
 			string textbar = "%lu/%lu".printf (current_target, n_targets);
@@ -1023,15 +869,15 @@ namespace Pamac {
 				previous_percent = fraction;
 				progress_dialog.progressbar.set_fraction (fraction);
 			}
-			while (Gtk.events_pending ()) {
-				Gtk.main_iteration ();
-			}
+//~ 			while (Gtk.events_pending ()) {
+//~ 				Gtk.main_iteration ();
+//~ 			}
 		}
 
 		void on_emit_download (string filename, uint64 xfered, uint64 total) {
 			string label;
-			string textbar;
-			double fraction;
+			var text = new StringBuilder ();
+			float fraction;
 			if (filename != previous_filename) {
 				previous_filename = filename;
 				if (filename.has_suffix (".db")) {
@@ -1046,40 +892,95 @@ namespace Pamac {
 				}
 			}
 			if (total_download > 0) {
-				fraction = (float) (xfered + already_downloaded) / total_download;
-				if (fraction <= 1) {
-					textbar = "%s/%s".printf (format_size (xfered + already_downloaded), format_size (total_download));
+				if (xfered == 0) {
+					previous_xfered = 0;
+					fraction = previous_percent;
+					text.append (previous_textbar);
+					timer.start ();
 				} else {
-					textbar = "%s".printf (format_size (xfered + already_downloaded));
+					download_rate = ((download_rate * rates_nb) + (uint64) ((xfered - previous_xfered) / timer.elapsed ())) / (rates_nb + 1);
+					rates_nb++;
+					previous_xfered = xfered;
+					uint64 downloaded_total = xfered + already_downloaded;
+					fraction = (float) downloaded_total / total_download;
+					if (fraction <= 1) {
+						text.append ("%s/%s  ".printf (format_size (xfered + already_downloaded), format_size (total_download)));
+						uint64 remaining_seconds = (total_download - downloaded_total) / download_rate;
+						if (remaining_seconds > 9) {
+							if (remaining_seconds <= 50) {
+								text.append (dgettext (null, "About %u seconds remaining").printf ((uint) Math.ceilf ((float) remaining_seconds / 10) * 10));
+							} else {
+								uint remaining_minutes = (uint) Math.ceilf ((float) remaining_seconds / 60);
+								text.append (dngettext (null, "About %lu minute remaining",
+											"About %lu minutes remaining", remaining_minutes).printf (remaining_minutes));
+							}
+						}
+					} else {
+						text.append ("%s".printf (format_size (xfered + already_downloaded)));
+					}
+					if (xfered == total) {
+						previous_filename = "";
+						already_downloaded += total;
+					} else {
+						timer.start ();
+					}
 				}
 			} else {
-				fraction = (float) xfered / total;
-				if (fraction <= 1) {
-					textbar = "%s/%s".printf (format_size (xfered), format_size (total));
+				if (xfered == 0) {
+					previous_xfered = 0;
+					download_rate = 0;
+					rates_nb = 0;
+					fraction = 0;
+					timer.start ();
+				} else if (xfered == total) {
+					timer.stop ();
+					fraction = 1;
+					previous_filename = "";
 				} else {
-					textbar = "%s".printf (format_size (xfered));
+					download_rate = ((download_rate * rates_nb) + (uint64) ((xfered - previous_xfered) / timer.elapsed ())) / (rates_nb + 1);
+					previous_xfered = xfered;
+					rates_nb++;
+					fraction = (float) xfered / total;
+					if (fraction <= 1) {
+						text.append ("%s/%s  ".printf (format_size (xfered), format_size (total)));
+						uint64 remaining_seconds = (total - xfered) / download_rate;
+						if (remaining_seconds > 9) {
+							if (remaining_seconds <= 50) {
+								text.append (dgettext (null, "About %u seconds remaining").printf ((uint) Math.ceilf ((float) remaining_seconds / 10) * 10));
+							} else {
+								uint remaining_minutes = (uint) Math.ceilf ((float) remaining_seconds / 60);
+								text.append (dngettext (null, "About %lu minute remaining",
+											"About %lu minutes remaining", remaining_minutes).printf (remaining_minutes));
+							}
+						}
+					} else {
+						text.append ("%s".printf (format_size (xfered)));
+					}
+					// reinitialize timer
+					timer.start ();
 				}
 			}
-			if (fraction > 0) {
-				if (fraction != previous_percent) {
-					previous_percent = fraction;
-					progress_dialog.progressbar.set_fraction (fraction);
-				}
-			} else {
-				progress_dialog.progressbar.set_fraction (0);
+			if (fraction != previous_percent) {
+				previous_percent = fraction;
+				progress_dialog.progressbar.set_fraction (fraction);
 			}
-			if (textbar != previous_textbar) {
-				previous_textbar = textbar;
-				progress_dialog.progressbar.set_text (textbar);
-			}
-			if (xfered == total) {
-				already_downloaded += total;
-				previous_filename = "";
+			if (text.str != previous_textbar) {
+				previous_textbar = text.str;
+				progress_dialog.progressbar.set_text (text.str);
 			}
 		}
 
 		void on_emit_totaldownload (uint64 total) {
+			download_rate = 0;
+			rates_nb = 0;
+			previous_percent = 0;
+			previous_textbar = "";
 			total_download = total;
+			//  this is emitted at the end of the total download 
+			// with the value 0 so stop our timer
+			if (total == 0) {
+				timer.stop ();
+			}
 		}
 
 		void on_emit_log (uint level, string msg) {
@@ -1130,63 +1031,78 @@ namespace Pamac {
 		}
 
 		public void handle_error (ErrorInfos error) {
-			progress_dialog.expander.set_expanded (true);
-			progress_dialog.spawn_in_term ({"echo", "-n", error.message});
-			Gtk.TextIter start_iter;
-			Gtk.TextIter end_iter;
-			transaction_info_dialog.set_title (dgettext (null, "Error"));
-			transaction_info_dialog.label.set_visible (true);
-			transaction_info_dialog.label.set_markup (error.message);
-			if (error.details.length != 0) {
+			if (error.message != null && error.message != "") {
+				progress_dialog.expander.set_expanded (true);
+				progress_dialog.spawn_in_term ({"echo", "-n", error.message});
+				Gtk.TextIter start_iter;
+				Gtk.TextIter end_iter;
+				transaction_info_dialog.set_title (dgettext (null, "Error"));
+				transaction_info_dialog.label.set_visible (true);
+				transaction_info_dialog.label.set_markup (error.message);
+				if (error.details.length != 0) {
+					transaction_info_dialog.textbuffer.get_start_iter (out start_iter);
+					transaction_info_dialog.textbuffer.get_end_iter (out end_iter);
+					transaction_info_dialog.textbuffer.delete (ref start_iter, ref end_iter);
+					transaction_info_dialog.expander.set_visible (true);
+					transaction_info_dialog.expander.set_expanded (true);
+					progress_dialog.spawn_in_term ({"echo", ":"});
+					foreach (unowned string detail in error.details) {
+						progress_dialog.spawn_in_term ({"echo", detail});
+						string str = detail + "\n";
+						transaction_info_dialog.textbuffer.get_end_iter (out end_iter);
+						transaction_info_dialog.textbuffer.insert (ref end_iter, str, str.length);
+					}
+				} else {
+					transaction_info_dialog.expander.set_visible (false);
+				}
+				progress_dialog.spawn_in_term ({"echo"});
+				transaction_info_dialog.run ();
+				transaction_info_dialog.hide ();
 				transaction_info_dialog.textbuffer.get_start_iter (out start_iter);
 				transaction_info_dialog.textbuffer.get_end_iter (out end_iter);
 				transaction_info_dialog.textbuffer.delete (ref start_iter, ref end_iter);
-				transaction_info_dialog.expander.set_visible (true);
-				transaction_info_dialog.expander.set_expanded (true);
-				progress_dialog.spawn_in_term ({"echo", ":"});
-				foreach (string detail in error.details) {
-					progress_dialog.spawn_in_term ({"echo", detail});
-					string str = detail + "\n";
-					transaction_info_dialog.textbuffer.get_end_iter (out end_iter);
-					transaction_info_dialog.textbuffer.insert (ref end_iter, str, str.length);
+				progress_dialog.progressbar.set_fraction (0);
+				progress_dialog.cancel_button.set_visible (false);
+				progress_dialog.close_button.set_visible (true);
+				progress_dialog.spawn_in_term ({"echo"});
+				while (Gtk.events_pending ()) {
+					Gtk.main_iteration ();
 				}
-			} else {
-				transaction_info_dialog.expander.set_visible (false);
-			}
-			progress_dialog.spawn_in_term ({"echo"});
-			transaction_info_dialog.run ();
-			transaction_info_dialog.hide ();
-			progress_dialog.hide ();
-			transaction_info_dialog.textbuffer.get_start_iter (out start_iter);
-			transaction_info_dialog.textbuffer.get_end_iter (out end_iter);
-			transaction_info_dialog.textbuffer.delete (ref start_iter, ref end_iter);
-			while (Gtk.events_pending ()) {
-				Gtk.main_iteration ();
 			}
 		}
 
-		public void on_refresh_finished (ErrorInfos error) {
-			if (error.message == "") {
+		public void on_refresh_finished (bool success) {
+			if (success) {
 				if (mode == Mode.UPDATER) {
+					finished (true);
 					progress_dialog.hide ();
 					while (Gtk.events_pending ()) {
 						Gtk.main_iteration ();
 					}
-					finished (false);
 				} else {
 					clear_lists ();
-					sysupgrade (0);
+					sysupgrade (false);
 				}
 			} else {
 				finished (true);
-				handle_error (error);
+				handle_error (get_current_error ());
 			}
 			previous_filename = "";
 			daemon.refresh_finished.disconnect (on_refresh_finished);
 		}
 
-		public void on_trans_prepare_finished (ErrorInfos error) {
-			if (error.message == "") {
+		public void on_cancel_button_clicked () {
+			cancel ();
+			clear_lists ();
+			progress_dialog.spawn_in_term ({"/usr/bin/echo", dgettext (null, "Transaction cancelled") + ".\n"});
+			progress_dialog.hide ();
+			while (Gtk.events_pending ()) {
+				Gtk.main_iteration ();
+			}
+		}
+
+		public void on_trans_prepare_finished (bool success) {
+			if (success) {
 				show_warnings ();
 				TransactionType type = set_transaction_sum ();
 				if (type == TransactionType.UPDATE && mode == Mode.UPDATER) {
@@ -1200,8 +1116,8 @@ namespace Pamac {
 						}
 						if (type == TransactionType.BUILD) {
 							// there only AUR packages to build
-							var err = ErrorInfos ();
-							on_trans_commit_finished (err);
+							release ();
+							on_trans_commit_finished (true);
 						} else {
 							start_commit ();
 						}
@@ -1213,9 +1129,9 @@ namespace Pamac {
 							Gtk.main_iteration ();
 						}
 						release ();
-						to_build.remove_all ();
+						//to_build.remove_all ();
 						sysupgrade_after_trans = false;
-						finished (true);
+						finished (false);
 					}
 				} else {
 					//var err = ErrorInfos ();
@@ -1231,13 +1147,13 @@ namespace Pamac {
 					//handle_error (err);
 				}
 			} else {
-				finished (true);
-				handle_error (error);
+				finished (false);
+				handle_error (get_current_error ());
 			}
 		}
 
-		public void on_trans_commit_finished (ErrorInfos error) {
-			if (error.message == "") {
+		public void on_trans_commit_finished (bool success) {
+			if (success) {
 				if (to_build.length != 0) {
 					if (to_add.length != 0
 							|| to_remove.length != 0
@@ -1246,61 +1162,59 @@ namespace Pamac {
 					}
 					build_aur_packages ();
 				} else {
-					//progress_dialog.action_label.set_text (dgettext (null, "Transaction successfully finished"));
 					clear_lists ();
 					show_warnings ();
 					if (sysupgrade_after_trans) {
 						sysupgrade_after_trans = false;
-						sysupgrade (0);
+						sysupgrade (false);
 					} else {
-						if (build_status == 0) {
-							progress_dialog.spawn_in_term ({"echo", dgettext (null, "Transaction successfully finished") + ".\n"});
-							progress_dialog.hide ();
-							while (Gtk.events_pending ()) {
-								Gtk.main_iteration ();
-							}
-						} else {
-							progress_dialog.progressbar.set_fraction (0);
-							progress_dialog.cancel_button.set_visible (false);
-							progress_dialog.close_button.set_visible (true);
-							progress_dialog.spawn_in_term ({"echo"});
+						finished (true);
+						progress_dialog.spawn_in_term ({"echo", dgettext (null, "Transaction successfully finished") + ".\n"});
+						progress_dialog.hide ();
+						while (Gtk.events_pending ()) {
+							Gtk.main_iteration ();
 						}
-						finished (false);
 					}
 				}
 			} else {
-				finished (true);
-				handle_error (error);
+				// if it is an authentication error, database was not modified
+				var err = get_current_error ();
+				if (err.message == dgettext (null, "Authentication failed")) {
+					finished (false);
+				} else {
+					finished (true);
+				}
+				handle_error (err);
 			}
 			total_download = 0;
 			already_downloaded = 0;
-			build_status = 0;
 			previous_filename = "";
 		}
 
 		void on_term_child_exited (int status) {
 			Source.remove (pulse_timeout_id);
 			to_build.remove_all ();
-			build_status = status;
-			// let the time to the daemon to update packages
+			// let the time to the daemon to update databases
 			Timeout.add (1000, () => {
-				var err = ErrorInfos ();
-				on_trans_commit_finished (err);
+				finished (true);
+				if (status == 0) {
+					progress_dialog.spawn_in_term ({"echo", dgettext (null, "Transaction successfully finished") + ".\n"});
+					progress_dialog.hide ();
+					while (Gtk.events_pending ()) {
+						Gtk.main_iteration ();
+					}
+				} else {
+					progress_dialog.progressbar.set_fraction (0);
+					progress_dialog.cancel_button.set_visible (false);
+					progress_dialog.close_button.set_visible (true);
+					progress_dialog.spawn_in_term ({"echo"});
+				}
 				return false;
 			});
 		}
 
-		void on_write_pamac_config_finished (bool recurse, int refresh_period, bool no_update_hide_icon,
-											bool enable_aur, bool search_aur, bool check_aur_updates,
-											bool no_confirm_build) {
-			flags = Alpm.TransFlag.CASCADE;
-			if (recurse) {
-				flags |= Alpm.TransFlag.RECURSE;
-			}
-			Pamac.Package pkg = find_local_satisfier ("yaourt");
-			if (pkg.name != "") {
-				support_aur (enable_aur, search_aur);
-			}
+		void on_write_pamac_config_finished () {
+			pamac_config.reload ();
 		}
 
 		void on_generate_mirrors_list_data (string line) {
@@ -1311,13 +1225,14 @@ namespace Pamac {
 			Source.remove (pulse_timeout_id);
 			progress_dialog.spawn_in_term ({"echo"});
 			// force a dbs refresh
-			start_refresh (1);
+			start_refresh (true);
 		}
 
 		void connecting_dbus_signals () {
 			try {
-				daemon = Bus.get_proxy_sync (BusType.SYSTEM, "org.manjaro.pamac",
-														"/org/manjaro/pamac");
+				daemon = Bus.get_proxy_sync (BusType.SYSTEM, "org.manjaro.pamac", "/org/manjaro/pamac");
+				// Set environment variables
+				daemon.set_environment_variables (pamac_config.environment_variables);
 				// Connecting to signals
 				daemon.emit_event.connect (on_emit_event);
 				daemon.emit_providers.connect (on_emit_providers);
diff --git a/src/tray.vala b/src/tray.vala
index 300ee72..835706f 100644
--- a/src/tray.vala
+++ b/src/tray.vala
@@ -1,7 +1,7 @@
 /*
  *  pamac-vala
  *
- *  Copyright (C) 2014-2015 Guillaume Benoit <guillaume@manjaro.org>
+ *  Copyright (C) 2014-2016 Guillaume Benoit <guillaume@manjaro.org>
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -27,12 +27,12 @@ const string noupdate_info = _("Your system is up-to-date");
 namespace Pamac {
 	[DBus (name = "org.manjaro.pamac")]
 	public interface Daemon : Object {
-		public abstract void start_refresh (int force) throws IOError;
-		public abstract async Updates get_updates (bool check_aur_updates) throws IOError;
+		public abstract void start_refresh (bool force) throws IOError;
+		public abstract void start_get_updates (bool check_aur_updates) throws IOError;
 		[DBus (no_reply = true)]
 		public abstract void quit () throws IOError;
-		public signal void refresh_finished (ErrorInfos error);
-		public signal void write_pamac_config_finished (bool recurse, int refresh_period, bool no_update_hide_icon,
+		public signal void get_updates_finished (Updates updates);
+		public signal void write_pamac_config_finished (bool recurse, uint64 refresh_period, bool no_update_hide_icon,
 														bool enable_aur, bool search_aur, bool check_aur_updates,
 														bool no_confirm_build);
 		public signal void write_alpm_config_finished (bool checkspace);
@@ -40,6 +40,7 @@ namespace Pamac {
 
 	public class TrayIcon: Gtk.Application {
 		Notify.Notification notification;
+//~ 		Notification notification;
 		Daemon daemon;
 		bool extern_lock;
 		uint refresh_timeout_id;
@@ -54,9 +55,9 @@ namespace Pamac {
 
 		void start_daemon () {
 			try {
-				daemon = Bus.get_proxy_sync (BusType.SYSTEM, "org.manjaro.pamac",
-														"/org/manjaro/pamac");
+				daemon = Bus.get_proxy_sync (BusType.SYSTEM, "org.manjaro.pamac", "/org/manjaro/pamac");
 				// Connecting to signals
+				daemon.get_updates_finished.connect (on_get_updates_finished);
 				daemon.write_pamac_config_finished.connect (on_write_pamac_config_finished);
 				daemon.write_alpm_config_finished.connect (on_write_alpm_config_finished);
 			} catch (IOError e) {
@@ -65,7 +66,7 @@ namespace Pamac {
 		}
 
 		void stop_daemon () {
-			if (check_pamac_running () == false) {
+			if (!check_pamac_running ()) {
 				try {
 					daemon.quit ();
 				} catch (IOError e) {
@@ -128,7 +129,7 @@ namespace Pamac {
 				check_updates ();
 			} else {
 				try {
-					daemon.start_refresh (0);
+					daemon.start_refresh (false);
 				} catch (IOError e) {
 					stderr.printf ("IOError: %s\n", e.message);
 				}
@@ -136,10 +137,8 @@ namespace Pamac {
 			return true;
 		}
 
-		void on_write_pamac_config_finished (bool recurse, int refresh_period, bool no_update_hide_icon,
-											bool enable_aur, bool search_aur, bool check_aur_updates,
-											bool no_confirm_build) {
-			launch_refresh_timeout ((uint) refresh_period);
+		void on_write_pamac_config_finished (bool recurse, uint64 refresh_period) {
+			launch_refresh_timeout (refresh_period);
 			if (refresh_period == 0) {
 				status_icon.visible = false;
 			} else {
@@ -151,36 +150,40 @@ namespace Pamac {
 			check_updates ();
 		}
 
+		void on_get_updates_finished (Updates updates) {
+			uint updates_nb = updates.repos_updates.length + updates.aur_updates.length;
+			if (updates_nb == 0) {
+				this.update_icon (noupdate_icon_name, noupdate_info);
+				var pamac_config = new Pamac.Config ("/etc/pamac.conf");
+				if (pamac_config.no_update_hide_icon) {
+					status_icon.visible = false;
+				} else {
+					status_icon.visible = true;
+				}
+				close_notification();
+			} else {
+				string info = ngettext ("%u available update", "%u available updates", updates_nb).printf (updates_nb);
+				this.update_icon (update_icon_name, info);
+				status_icon.visible = true;
+				if (check_pamac_running ()) {
+					update_notification (info);
+				} else {
+					show_notification (info);
+				}
+			}
+			stop_daemon ();
+		}
+
 		void check_updates () {
 			var pamac_config = new Pamac.Config ("/etc/pamac.conf");
 			if (pamac_config.refresh_period == 0) {
 				return;
 			}
-			daemon.get_updates.begin ((pamac_config.enable_aur && pamac_config.check_aur_updates), (obj, res) => {
-				var updates = Updates ();
-				try {
-					updates = daemon.get_updates.end (res);
-				} catch (IOError e) {
-					stderr.printf ("IOError: %s\n", e.message);
-				}
-				uint updates_nb = updates.repos_updates.length + updates.aur_updates.length;
-				if (updates_nb == 0) {
-					this.update_icon (noupdate_icon_name, noupdate_info);
-					if (pamac_config.no_update_hide_icon) {
-						status_icon.visible = false;
-					} else {
-						status_icon.visible = true;
-					}
-				} else {
-					string info = ngettext ("%u available update", "%u available updates", updates_nb).printf (updates_nb);
-					this.update_icon (update_icon_name, info);
-					status_icon.visible = true;
-					if (check_pamac_running () == false) {
-						show_notification (info);
-					}
-				}
-				stop_daemon ();
-			});
+			try {
+				daemon.start_get_updates (pamac_config.enable_aur && pamac_config.check_aur_updates);
+			} catch (IOError e) {
+				stderr.printf ("IOError: %s\n", e.message);
+			}
 		}
 
 		void show_notification (string info) {
@@ -193,16 +196,44 @@ namespace Pamac {
 //~ 				action.activate.connect (execute_updater);
 //~ 				this.add_action (action);
 //~ 				notification.add_button (_("Show available updates"), "app.update");
+//~ 				notification.set_default_action ("app.update");
 //~ 				this.send_notification (_("Update Manager"), notification);
 			try {
+				close_notification();
 				notification = new Notify.Notification (_("Update Manager"), info, "system-software-update");
-				notification.add_action ("update", _("Show available updates"), execute_updater);
+				notification.add_action ("default", _("Show available updates"), execute_updater);
 				notification.show ();
 			} catch (Error e) {
 				stderr.printf ("Notify Error: %s", e.message);
 			}
 		}
 
+		void update_notification (string info) {
+			try {
+				if (notification != null) {
+					if (notification.get_closed_reason() == -1 && notification.body != info) {
+						notification.update (_("Update Manager"), info, "system-software-update");
+						notification.show ();
+					}
+				} else {
+					show_notification (info);
+				}
+			} catch (Error e) {
+				stderr.printf ("Notify Error: %s", e.message);
+			}
+		}
+
+		void close_notification () {
+			try {
+				if (notification != null) {
+				 	notification.close();
+				 	notification = null;
+				}
+			} catch (Error e) {
+				stderr.printf ("Notify Error: %s", e.message);
+			}
+		}
+
 		bool check_pamac_running () {
 			Application app;
 			bool run = false;
@@ -238,7 +269,7 @@ namespace Pamac {
 
 		bool check_pacman_running () {
 			if (extern_lock) {
-				if (lockfile.query_exists () == false) {
+				if (!lockfile.query_exists ()) {
 					extern_lock = false;
 					// let the time to the daemon to update packages
 					Timeout.add (1000, () => {
@@ -247,20 +278,20 @@ namespace Pamac {
 					});
 				}
 			} else {
-				if (lockfile.query_exists () == true) {
+				if (lockfile.query_exists ()) {
 					extern_lock = true;
 				}
 			}
 			return true;
 		}
 
-		void launch_refresh_timeout (uint refresh_period_in_hours) {
+		void launch_refresh_timeout (uint64 refresh_period_in_hours) {
 			if (refresh_timeout_id != 0) {
 				Source.remove (refresh_timeout_id);
 				refresh_timeout_id = 0;
 			}
 			if (refresh_period_in_hours != 0) {
-				refresh_timeout_id = Timeout.add_seconds (refresh_period_in_hours*3600, start_refresh);
+				refresh_timeout_id = Timeout.add_seconds ((uint) refresh_period_in_hours*3600, start_refresh);
 			}
 		}
 
@@ -293,9 +324,9 @@ namespace Pamac {
 			alpm_config.get_handle ();
 			lockfile = GLib.File.new_for_path (alpm_config.handle.lockfile);
 			start_daemon ();
-			Timeout.add (500, check_pacman_running);
+			Timeout.add (200, check_pacman_running);
 			start_refresh ();
-			launch_refresh_timeout ((uint) pamac_config.refresh_period);
+			launch_refresh_timeout (pamac_config.refresh_period);
 
 			this.hold ();
 		}
diff --git a/src/updater.vala b/src/updater.vala
index c24e9e3..b430aa8 100644
--- a/src/updater.vala
+++ b/src/updater.vala
@@ -50,14 +50,14 @@ namespace Pamac {
 		}
 
 		public override void activate () {
-			if (pamac_run == false) {
+			if (!pamac_run) {
 				updater_window.present ();
 			}
 		}
 
 		public override void shutdown () {
 			base.shutdown ();
-			if (pamac_run == false) {
+			if (!pamac_run) {
 				updater_window.transaction.stop_daemon ();
 			}
 		}
diff --git a/src/updater_window.vala b/src/updater_window.vala
index 19be1ac..0b09d31 100644
--- a/src/updater_window.vala
+++ b/src/updater_window.vala
@@ -1,7 +1,7 @@
 /*
  *  pamac-vala
  *
- *  Copyright (C) 2014-2015 Guillaume Benoit <guillaume@manjaro.org>
+ *  Copyright (C) 2014-2016 Guillaume Benoit <guillaume@manjaro.org>
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -25,58 +25,114 @@ namespace Pamac {
 		[GtkChild]
 		public Gtk.Label top_label;
 		[GtkChild]
-		public Gtk.TreeView updates_treeview;
+		public Gtk.Notebook notebook;
 		[GtkChild]
-		public Gtk.CellRendererToggle select_update;
+		public Gtk.ScrolledWindow repos_scrolledwindow;
+		[GtkChild]
+		public Gtk.ScrolledWindow aur_scrolledwindow;
+		[GtkChild]
+		public Gtk.TreeView repos_updates_treeview;
+		[GtkChild]
+		public Gtk.CellRendererToggle repos_select_update;
+		[GtkChild]
+		public Gtk.TreeView aur_updates_treeview;
+		[GtkChild]
+		public Gtk.CellRendererToggle aur_select_update;
 		[GtkChild]
 		public Gtk.Label bottom_label;
 		[GtkChild]
 		public Gtk.Button apply_button;
 
-		public Gtk.ListStore updates_list;
+		public Gtk.ListStore repos_updates_list;
+		public Gtk.ListStore aur_updates_list;
 
 		public Pamac.Transaction transaction;
 
 		public UpdaterWindow (Gtk.Application application) {
 			Object (application: application);
 
-			updates_list = new Gtk.ListStore (3, typeof (bool), typeof (string), typeof (string));
-			updates_treeview.set_model (updates_list);
+			repos_updates_list = new Gtk.ListStore (3, typeof (bool), typeof (string), typeof (string));
+			repos_updates_treeview.set_model (repos_updates_list);
+			aur_updates_list = new Gtk.ListStore (2, typeof (bool), typeof (string));
+			aur_updates_treeview.set_model (aur_updates_list);
 
 			transaction = new Transaction (this as Gtk.ApplicationWindow);
 			transaction.mode = Mode.UPDATER;
 			transaction.finished.connect (on_transaction_finished);
 
+			transaction.daemon.get_updates_finished.connect (on_get_updates_finished);
+
 			bottom_label.set_visible (false);
 			apply_button.set_sensitive (false);
 
+			notebook.set_show_tabs (false);
+			aur_scrolledwindow.set_visible (false);
+
 			on_refresh_button_clicked ();
 		}
 
+		public void set_apply_button_sensitive () {
+			bool sensitive = false;
+			repos_updates_list.foreach ((model, path, iter) => {
+				GLib.Value selected;
+				repos_updates_list.get_value (iter, 0, out selected);
+				sensitive = (bool) selected;
+				return sensitive;
+			});
+			if (!sensitive) {
+				aur_updates_list.foreach ((model, path, iter) => {
+					GLib.Value selected;
+					aur_updates_list.get_value (iter, 0, out selected);
+					sensitive = (bool) selected;
+					return sensitive;
+				});
+			}
+			apply_button.set_sensitive (sensitive);
+		}
+
 		[GtkCallback]
-		public void on_select_update_toggled (string path) {
+		public void on_repos_select_update_toggled (string path) {
 			Gtk.TreePath treepath = new Gtk.TreePath.from_string (path);
 			Gtk.TreeIter iter;
-			updates_list.get_iter (out iter, treepath);
-			updates_list.set (iter, 0, !select_update.active);
-			updates_list.foreach ((model, path, iter) => {
-				GLib.Value val;
-				updates_list.get_value (iter, 0, out val);
-				bool selected = val.get_boolean ();
-				if (selected) {
-					apply_button.set_sensitive (true);
-					return true;
-				}
-				apply_button.set_sensitive (false);
-				return false;
-			});
+			GLib.Value name_string;
+			repos_updates_list.get_iter (out iter, treepath);
+			repos_updates_list.get_value (iter, 1, out name_string);
+			// string has the form "pkgname pkgversion"
+			string pkgname = name_string.get_string ().split (" ", 2)[0];
+			if (repos_select_update.active) {
+				repos_updates_list.set (iter, 0, false);
+				transaction.special_ignorepkgs.add (pkgname);
+			} else {
+				repos_updates_list.set (iter, 0, true);
+				transaction.special_ignorepkgs.remove (pkgname);
+			}
+			set_apply_button_sensitive ();
+		}
+
+		[GtkCallback]
+		public void on_aur_select_update_toggled  (string path) {
+			Gtk.TreePath treepath = new Gtk.TreePath.from_string (path);
+			Gtk.TreeIter iter;
+			GLib.Value name_string;
+			aur_updates_list.get_iter (out iter, treepath);
+			aur_updates_list.get_value (iter, 1, out name_string);
+			// string has the form "pkgname pkgversion"
+			string pkgname = name_string.get_string ().split (" ", 2)[0];
+			if (aur_select_update.active) {
+				aur_updates_list.set (iter, 0, false);
+				transaction.special_ignorepkgs.add (pkgname);
+			} else {
+				aur_updates_list.set (iter, 0, true);
+				transaction.special_ignorepkgs.remove (pkgname);
+			}
+			set_apply_button_sensitive ();
 		}
 
 		public async void run_preferences_dialog () {
 			SourceFunc callback = run_preferences_dialog.callback;
 			ulong handler_id = transaction.daemon.get_authorization_finished.connect ((authorized) => {
 				if (authorized) {
-					var preferences_dialog = new PreferencesDialog (transaction, this);
+					var preferences_dialog = new PreferencesDialog (this, transaction);
 					preferences_dialog.run ();
 					preferences_dialog.destroy ();
 					while (Gtk.events_pending ()) {
@@ -93,37 +149,20 @@ namespace Pamac {
 		[GtkCallback]
 		public void on_preferences_button_clicked () {
 			run_preferences_dialog.begin (() => {
-				set_updates_list.begin ();
+				populate_updates_list ();
 			});
 		}
 
 		[GtkCallback]
 		public void on_apply_button_clicked () {
 			this.get_window ().set_cursor (new Gdk.Cursor.for_display (Gdk.Display.get_default (), Gdk.CursorType.WATCH));
-			updates_list.foreach ((model, path, iter) => {
-				GLib.Value val;
-				updates_list.get_value (iter, 0, out val);
-				bool selected = val.get_boolean ();
-				if (selected) {
-					updates_list.get_value (iter, 1, out val);
-					// string has the form "pkgname pkgversion"
-					string pkgname = val.get_string ().split (" ", 2)[0];
-					transaction.special_ignorepkgs.remove (pkgname);
-				} else {
-					updates_list.get_value (iter, 1, out val);
-					// string has the form "pkgname pkgversion"
-					string pkgname = val.get_string ().split (" ", 2)[0];
-					transaction.special_ignorepkgs.add ((owned) pkgname);
-				}
-				return false;
-			});
-			transaction.sysupgrade (0);
+			transaction.sysupgrade (false);
 		}
 
 		[GtkCallback]
 		public void on_refresh_button_clicked () {
 			this.get_window ().set_cursor (new Gdk.Cursor.for_display (Gdk.Display.get_default (), Gdk.CursorType.WATCH));
-			transaction.start_refresh (0);
+			transaction.start_refresh (false);
 		}
 
 		[GtkCallback]
@@ -131,55 +170,75 @@ namespace Pamac {
 			this.application.quit ();
 		}
 
-		public void on_transaction_finished (bool error) {
-			set_updates_list.begin ();
+		public void on_transaction_finished (bool database_modified) {
+			if (database_modified) {
+				populate_updates_list ();
+			} else {
+				this.get_window ().set_cursor (null);
+			}
 		}
 
-		public async void set_updates_list () {
+		public void populate_updates_list () {
 			this.get_window ().set_cursor (new Gdk.Cursor.for_display (Gdk.Display.get_default (), Gdk.CursorType.WATCH));
+			transaction.start_get_updates ();
+		}
+
+		public void on_get_updates_finished (Updates updates) {
 			top_label.set_markup ("");
-			updates_list.clear ();
+			repos_updates_list.clear ();
+			notebook.set_show_tabs (false);
+			repos_scrolledwindow.set_visible (true);
+			aur_updates_list.clear ();
 			bottom_label.set_visible (false);
 			Gtk.TreeIter iter;
-			string name;
-			string size;
 			uint64 dsize = 0;
-			uint updates_nb = 0;
-			Updates updates = yield transaction.get_updates ();
-			foreach (UpdateInfos infos in updates.repos_updates) {
-				name = infos.name + " " + infos.version;
-				if (infos.download_size != 0) {
-					size = format_size (infos.download_size);
-				} else {
-					size = "";
-				}
+			uint repos_updates_nb = 0;
+			uint aur_updates_nb = 0;
+			foreach (unowned PackageInfos infos in updates.repos_updates) {
+				string name = infos.name + " " + infos.version;
+				string size = infos.download_size != 0 ? format_size (infos.download_size) : "";
 				dsize += infos.download_size;
-				updates_nb++;
+				repos_updates_nb++;
 				if (infos.name in transaction.special_ignorepkgs) {
-					updates_list.insert_with_values (out iter, -1, 0, false, 1, name, 2, size);
+					repos_updates_list.insert_with_values (out iter, -1, 0, false, 1, name, 2, size);
 				} else {
-					updates_list.insert_with_values (out iter, -1, 0, true, 1, name, 2, size);
+					repos_updates_list.insert_with_values (out iter, -1, 0, true, 1, name, 2, size);
 				}
 			}
-			foreach (UpdateInfos infos in updates.aur_updates) {
-				name = infos.name + " " + infos.version;
-				size = "";
-				updates_nb++;
-				updates_list.insert_with_values (out iter, -1, 0, true, 1, name, 2, size);
+			foreach (unowned PackageInfos infos in updates.aur_updates) {
+				string name = infos.name + " " + infos.version;
+				aur_updates_nb++;
+				if (infos.name in transaction.special_ignorepkgs) {
+					aur_updates_list.insert_with_values (out iter, -1, 0, false, 1, name);
+				} else {
+					aur_updates_list.insert_with_values (out iter, -1, 0, true, 1, name);
+				}
 			}
+			uint updates_nb = repos_updates_nb + aur_updates_nb;
 			if (updates_nb == 0) {
 				top_label.set_markup("<b>%s</b>".printf (dgettext (null, "Your system is up-to-date")));
-				apply_button.set_sensitive (false);
 			} else {
 				top_label.set_markup("<b>%s</b>".printf (dngettext (null, "%u available update", "%u available updates", updates_nb).printf (updates_nb)));
-				apply_button.set_sensitive (true);
 			}
+			set_apply_button_sensitive ();
 			if (dsize != 0) {
 				bottom_label.set_markup("<b>%s: %s</b>".printf (dgettext (null, "Total download size"), format_size(dsize)));
 				bottom_label.set_visible (true);
 			} else {
 				bottom_label.set_visible (false);
 			}
+			if (repos_updates_nb != 0) {
+				notebook.set_show_tabs (true);
+			}
+			if (aur_updates_nb == 0) {
+				aur_scrolledwindow.set_visible (false);
+			} else {
+				aur_scrolledwindow.set_visible (true);
+				if (repos_updates_nb == 0) {
+					repos_scrolledwindow.set_visible (false);
+				}
+				notebook.set_show_tabs (true);
+			}
 			this.get_window ().set_cursor (null);
 		}
 	}
diff --git a/util/alpm-util.c b/util/alpm-util.c
index 69dc726..ec9a5c0 100644
--- a/util/alpm-util.c
+++ b/util/alpm-util.c
@@ -1,70 +1,59 @@
-#include <string.h>
 #include "alpm-util.h"
 
-alpm_pkg_t* alpm_pkg_load_file (alpm_handle_t *handle, const char *filename, int full, alpm_siglevel_t level) {
-	alpm_pkg_t *p;
-	int err = alpm_pkg_load(handle, filename, full, level, &p);
-	if (err == -1) return NULL;
-	else return p;
+alpm_pkg_t* alpm_pkg_load_file (alpm_handle_t* handle, const char* filename, int full, alpm_siglevel_t level) {
+	alpm_pkg_t* p;
+	if (alpm_pkg_load(handle, filename, full, level, &p) != -1) {
+		return p;
+	} else {
+		return NULL;
+	}
 }
 
 alpm_list_t* alpm_pkg_get_files_list (alpm_pkg_t* pkg) {
-	alpm_list_t *list = NULL;
-	alpm_filelist_t *pkgfiles;
+	alpm_list_t* list = NULL;
+	alpm_filelist_t* pkgfiles;
 	size_t i;
 
 	pkgfiles = alpm_pkg_get_files(pkg);
 
 	for(i = 0; i < pkgfiles->count; i++) {
-		const alpm_file_t *file = pkgfiles->files + i;
+		const alpm_file_t* file = pkgfiles->files + i;
 		list = alpm_list_add(list, file);
 	}
 	return list;
 }
 
-void* alpm_list_get_data (alpm_list_t *list) {
-	return list->data;
+void* alpm_list_get_data (alpm_list_t* list) {
+	if (list) {
+		return list->data;
+	} else {
+		return NULL;
+	}
 }
 
-void* alpm_list_nth_data (alpm_list_t *list, size_t n) {
-	return alpm_list_nth (list, n)->data;
-}
-
-alpm_list_t* alpm_list_add_str (alpm_list_t *list, const char *str) {
-	char *dup = strdup (str);
-	list = alpm_list_add (list, dup);
-	return list;
-}
-
-alpm_list_t* alpm_list_remove_data (alpm_list_t *list, const void *needle, alpm_list_fn_cmp fn) {
-	void *data = NULL;
-	list = alpm_list_remove (list, needle, fn, data);
-	free(data);
-	return list;
-}
-
-alpm_list_t* alpm_list_sort_data (alpm_list_t *list, alpm_list_fn_cmp fn) {
+alpm_list_t* alpm_list_sort (alpm_list_t* list, alpm_list_fn_cmp fn) {
 	list = alpm_list_msort (list, alpm_list_count (list), fn);
 	return list;
 }
 
-alpm_list_t *alpm_list_new () {
+alpm_list_t* alpm_list_new () {
 	return NULL;
 }
 
-void alpm_list_free_all (alpm_list_t *list) {
-   do { alpm_list_free_inner (list, free); alpm_list_free (list); list = NULL; } while (0);
+void alpm_list_free_data (alpm_list_t* list) {
+	alpm_list_free_inner (list, free);
 }
 
-void alpm_list_iterator (alpm_list_t *list, alpm_list_iterator_t* iter) {
+void alpm_list_iterator (alpm_list_t* list, alpm_list_iterator_t* iter) {
 	iter->pos = list;
 }
 
-void* alpm_list_iterator_next_value (alpm_list_iterator_t *iter) {
+void* alpm_list_iterator_next_value (alpm_list_iterator_t* iter) {
 	if (iter->pos) {
-		void* result = alpm_list_get_data (iter->pos);
+		void* data = alpm_list_get_data (iter->pos);
 		iter->pos = alpm_list_next (iter->pos);
-		return result;
+		return data;
+	} else {
+		return NULL;
 	}
-	else return NULL;
 }
diff --git a/util/alpm-util.h b/util/alpm-util.h
index f4444bd..7cebc82 100644
--- a/util/alpm-util.h
+++ b/util/alpm-util.h
@@ -7,17 +7,14 @@ typedef struct __alpm_list_iterator_t {
     alpm_list_t* pos;
 } alpm_list_iterator_t;
 
-void* alpm_list_get_data (alpm_list_t *list);
-void* alpm_list_nth_data (alpm_list_t *list, size_t n);
-alpm_list_t* alpm_list_add_str (alpm_list_t *list, const char *str);
-alpm_list_t *alpm_list_remove_data (alpm_list_t *list, const void *needle, alpm_list_fn_cmp fn);
-alpm_list_t *alpm_list_sort_data (alpm_list_t *list, alpm_list_fn_cmp fn);
-alpm_list_t *alpm_list_new ();
-void alpm_list_free_all (alpm_list_t *list);
-void alpm_list_iterator (alpm_list_t *list, alpm_list_iterator_t* i);
-void* alpm_list_iterator_next_value (alpm_list_iterator_t *iter);
+void* alpm_list_get_data (alpm_list_t* list);
+alpm_list_t* alpm_list_sort (alpm_list_t* list, alpm_list_fn_cmp fn);
+alpm_list_t* alpm_list_new ();
+void alpm_list_free_data (alpm_list_t* list);
+void alpm_list_iterator (alpm_list_t* list, alpm_list_iterator_t* i);
+void* alpm_list_iterator_next_value (alpm_list_iterator_t* iter);
 
-alpm_pkg_t* alpm_pkg_load_file (alpm_handle_t *handle, const char *filename, int full, alpm_siglevel_t level);
+alpm_pkg_t* alpm_pkg_load_file (alpm_handle_t* handle, const char* filename, int full, alpm_siglevel_t level);
 alpm_list_t* alpm_pkg_get_files_list (alpm_pkg_t* pkg);
 
 #endif //!ALPM_UTIL_H
diff --git a/vapi/libalpm.vapi b/vapi/libalpm.vapi
index 0017ded..12ce4c4 100644
--- a/vapi/libalpm.vapi
+++ b/vapi/libalpm.vapi
@@ -31,6 +31,14 @@ namespace Alpm {
 	*/
 	public unowned string version();
 
+	[CCode (cname = "alpm_caps", cprefix = "ALPM_CAPABILITY_")]
+	public enum Capabilities {
+		NLS = (1 << 0),
+		DOWNLOADER = (1 << 1),
+		SIGNATURES = (1 << 2)
+	}
+	public Capabilities capabilities();
+
 	public unowned Package? find_satisfier(Alpm.List<Package> pkgs, string depstring);
 
 	public unowned Package? pkg_find(Alpm.List<Package> haystack, string needle);
@@ -45,14 +53,11 @@ namespace Alpm {
 	/**
 	 * Handle
 	 */
-	[CCode (cname = "alpm_handle_t")]
+	[CCode (cname = "alpm_handle_t", free_function = "alpm_release")]
 	[Compact]
 	public class Handle {
 		[CCode (cname = "alpm_initialize")]
-		public static unowned Handle @new(string root, string dbpath, out Alpm.Errno error);
-
-		[CCode (cname = "alpm_release")]
-		public static int release (Handle handle);
+		public static Handle? @new(string root, string dbpath, out Alpm.Errno error);
 
 		public unowned string root {
 			[CCode (cname = "alpm_option_get_root")] get;
@@ -73,6 +78,15 @@ namespace Alpm {
 		[CCode (cname = "alpm_option_remove_cachedir")]
 		public int remove_cachedir(string cachedir);
 
+		public unowned Alpm.List<unowned string?> hookdirs {
+			[CCode (cname = "alpm_option_get_hookdirs")] get;
+			[CCode (cname = "alpm_option_set_hookdirs")] set;
+		}
+		[CCode (cname = "alpm_option_add_hookdir")]
+		public int add_hookdir(string hookdir);
+		[CCode (cname = "alpm_option_remove_hookdir")]
+		public int remove_hookdir(string hookdir);
+
 		public unowned string logfile {
 			[CCode (cname = "alpm_option_get_logfile")] get;
 			[CCode (cname = "alpm_option_set_logfile")] set;
@@ -146,6 +160,11 @@ namespace Alpm {
 			[CCode (cname = "alpm_option_set_checkspace")] set;
 		}
 
+		public unowned string dbext {
+			[CCode (cname = "alpm_option_get_dbext")] get;
+			[CCode (cname = "alpm_option_set_dbext")] set;
+		}
+
 		public Signature.Level defaultsiglevel {
 			[CCode (cname = "alpm_option_get_default_siglevel")] get;
 			[CCode (cname = "alpm_option_set_default_siglevel")] set;
@@ -195,6 +214,9 @@ namespace Alpm {
 			[CCode (cname = "alpm_option_set_progresscb")] set;
 		}
 
+		[CCode (cname = "alpm_unlock")]
+		public int unlock();
+
 		[CCode (cname = "alpm_register_syncdb")]
 		public unowned DB? register_syncdb(string treename, Signature.Level level);
 		[CCode (cname = "alpm_unregister_all_syncdbs")]
@@ -301,7 +323,7 @@ namespace Alpm {
 	[CCode (cname = "alpm_db_t", cprefix = "alpm_db_")]
 	[Compact]
 	public class DB {
-		public static int unregister(DB db);
+		public static int unregister(owned DB db);
 
 		public unowned string name {
 			[CCode (cname = "alpm_db_get_name")] get;
@@ -354,12 +376,9 @@ namespace Alpm {
 	/**
 	 * Packages
 	 */
-	[CCode (cname = "alpm_pkg_t", cprefix = "alpm_pkg_")]
+	[CCode (cname = "alpm_pkg_t", cprefix = "alpm_pkg_", free_function = "alpm_pkg_free")]
 	[Compact]
 	public class Package {
-
-		public static int free(Package pkg);
-
 		/* properties */
 		public unowned string filename {
 			[CCode (cname = "alpm_pkg_get_filename")] get;
@@ -370,6 +389,9 @@ namespace Alpm {
 		public unowned string version {
 			[CCode (cname = "alpm_pkg_get_version")] get;
 		}
+		public unowned string pkgbase {
+			[CCode (cname = "alpm_pkg_get_base")] get;
+		}
 		public From origin {
 			[CCode (cname = "alpm_pkg_get_origin")] get;
 		}
@@ -684,9 +706,6 @@ namespace Alpm {
 			DATABASE_MARGINAL_OK = (1 << 12),
 			DATABASE_UNKNOWN_OK = (1 << 13),
 
-			PACKAGE_SET = (1 << 27),
-			PACKAGE_TRUST_SET = (1 << 28),
-
 			USE_DEFAULT = (1 << 31)
 		}
 
@@ -719,6 +738,13 @@ namespace Alpm {
 		public unowned Signature.Result[] results;
 	}
 
+	/** Hooks */
+	[CCode (cname = "alpm_hook_when_t", cprefix = "ALPM_HOOK_")]
+	public enum HookWhen {
+		PRE_TRANSACTION = 1,
+		POST_TRANSACTION
+	}
+
 	/** Logging Levels */
 	[CCode (cname = "alpm_loglevel_t", cprefix = "ALPM_LOG_")]
 	public enum LogLevel {
@@ -754,6 +780,10 @@ namespace Alpm {
 			INTERCONFLICTS_START,
 			/** Inter-conflicts were checked for target package. */
 			INTERCONFLICTS_DONE,
+			/** Processing the package transaction is starting. */
+			TRANSACTION_START,
+			/** Processing the package transaction is finished. */
+			TRANSACTION_DONE,
 			/** Package will be installed/upgraded/downgraded/re-installed/removed; See
 			 * PackageOperation for arguments. */
 			PACKAGE_OPERATION_START,
@@ -824,9 +854,14 @@ namespace Alpm {
 			/** A .pacsave file was created; See PacsaveCreated for
 			 * arguments */
 			PACSAVE_CREATED,
-			/** A .pacorig file was created; See PacorigCreated for
-			 * arguments */
-			PACORIG_CREATED
+			/** Processing hooks will be started. */
+			HOOK_START,
+			/** Processing hooks is finished. */
+			HOOK_DONE,
+			/** A hook is starting */
+			HOOK_RUN_START,
+			/** A hook has finnished runnning */
+			HOOK_RUN_DONE
 		}
 
 		[CCode (cname = "alpm_event_any_t", has_type_id = false)]
@@ -913,14 +948,26 @@ namespace Alpm {
 			public unowned string file;
 		}
 
-		[CCode (cname = "alpm_event_pacorig_created_t", has_type_id = false)]
-		public class PacorigCreated {
-			/** Type of event. */
+		[CCode (cname = "alpm_event_hook_t", has_type_id = false)]
+		public class Hook {
+			/** Type of event.*/
 			public Type type;
-			/** New package. */
-			public unowned Package newpkg;
-			/** Filename of the file without the .pacorig suffix. */
-			public unowned string file;
+			/** Type of hooks. */
+			public HookWhen when;
+		}
+
+		[CCode (cname = "alpm_event_hook_run_t", has_type_id = false)]
+		public class HookRun {
+			/** Type of event.*/
+			public Type type;
+			/** Name of hook */
+			public unowned string name;
+			/** Description of hook to be outputted */
+			public unowned string desc;
+			/** position of hook being run */
+			public size_t position;
+			/** total hooks being run */
+			public size_t total;
 		}
 
 		/** This is an union passed to the callback, that allows the frontend to know
@@ -969,11 +1016,18 @@ namespace Alpm {
 			public unowned Package pacsave_created_oldpkg;
 			[CCode (cname = "pacsave_created.file")]
 			public unowned string pacsave_created_file;
-			// PacorigCreated pacorig_created;
-			[CCode (cname = "pacorig_created.newpkg")]
-			public unowned Package pacorig_created_newpkg;
-			[CCode (cname = "pacorig_created.file")]
-			public unowned string pacorig_created_file;
+			// Hook hook;
+			[CCode (cname = "hook.when")]
+			public HookWhen hook_when;
+			// HookRun hook_run;
+			[CCode (cname = "hook_run.name")]
+			public unowned string hook_run_name;
+			[CCode (cname = "hook_run.desc")]
+			public unowned string hook_run_desc;
+			[CCode (cname = "hook_run.position")]
+			public size_t hook_run_position;
+			[CCode (cname = "hook_run.total")]
+			public size_t hook_run_total;
 		}
 	}
 
@@ -1070,7 +1124,7 @@ namespace Alpm {
 			/** Answer: which provider to use (index from providers). */
 			public int use_index;
 			/** List of alpm_pkg_t* as possible providers. */
-			public unowned Alpm.List<Package?> providers;
+			public unowned Alpm.List<unowned Package?> providers;
 			/** What providers provide for. */
 			public unowned Depend depend;
 		}
@@ -1130,7 +1184,7 @@ namespace Alpm {
 			[CCode (cname = "select_provider.use_index")]
 			public int select_provider_use_index;
 			[CCode (cname = "select_provider.providers")]
-			public unowned Alpm.List<Package?> select_provider_providers;
+			public unowned Alpm.List<unowned Package?> select_provider_providers;
 			[CCode (cname = "select_provider.depend")]
 			public unowned Depend select_provider_depend;
 			// ImportKey import_key;
@@ -1261,6 +1315,7 @@ namespace Alpm {
 		TRANS_ABORT,
 		TRANS_TYPE,
 		TRANS_NOT_LOCKED,
+		TRANS_HOOK_FAILED,
 		/* Packages */
 		PKG_NOT_FOUND,
 		PKG_IGNORED,
@@ -1293,17 +1348,14 @@ namespace Alpm {
 		GPGME
 	}
 
-[CCode (cname = "alpm_list_t", cprefix = "alpm_list_", cheader_filename = "alpm_list.h,alpm-util.h",
-		free_function = "alpm_list_free")]
+	[CCode (cname = "alpm_list_t", cprefix = "alpm_list_", cheader_filename = "alpm_list.h,alpm-util.h",
+			dup_function = "alpm_list_copy", free_function = "alpm_list_free")]
 	[Compact]
 	public class List<G> {
 
-		[CCode (cname = "alpm_list_new")]
 		public List ();
 
-		public static void free_all(List list);
-
-		/* Comparator*/
+		/* comparator */
 		[CCode (cname = "alpm_list_fn_cmp", has_target = false)]
 		public delegate int CompareFunc<G>(G a, G b);
 
@@ -1317,25 +1369,25 @@ namespace Alpm {
 
 		/* item mutators */
 		[ReturnsModifiedPointer ()]
-		public unowned void add(G data);
+		public void add(owned G data);
 
 		[ReturnsModifiedPointer ()]
-		public unowned void add_str(string str);
+		public void join(owned List<G> list);
 
 		[ReturnsModifiedPointer ()]
-		public unowned void join(List<G> list);
+		public void sort(CompareFunc fn);
 
-		[CCode (cname = "alpm_list_sort_data"), ReturnsModifiedPointer ()]
-		public unowned void sort(CompareFunc fn);
+		[ReturnsModifiedPointer ()]
+		public void remove(G data, CompareFunc fn, out G removed_data );
 
-		[CCode (cname = "alpm_list_remove_data"), ReturnsModifiedPointer ()]
-		public unowned void? remove(G data, CompareFunc fn);
+		/* free the internal data of this */
+		public void free_data();
 
-		public List<G> copy();
+		public List<unowned G> copy();
 		public List<G> copy_data();
 
 		[ReturnsModifiedPointer ()]
-		public unowned void reverse ();
+		public void reverse ();
 
 		/* item accessors */
 		public unowned List<G>? first();
@@ -1344,13 +1396,12 @@ namespace Alpm {
 		public unowned List<G>? next();
 		public unowned List<G>? previous();
 
-		public unowned G? nth_data(size_t index);
-
 		/* misc */
+		public unowned G? find(G needle, CompareFunc fn);
 		public unowned string? find_str(string needle);
 
 		/** @return a list containing all items in `this` not present in `list` */
-		public unowned List<G>? diff(List<G>? list, CompareFunc fn);
+		public List<unowned G>? diff(List<G>? list, CompareFunc fn);
 
 		/* iterator */
 		public Iterator<G> iterator();
@@ -1359,6 +1410,7 @@ namespace Alpm {
 		public struct Iterator<G> {
 			public unowned G? next_value();
 		}
+
 	}
 }