diff --git a/data/dbus/org.manjaro.pamac.service b/data/dbus/org.manjaro.pamac.service
index 66c27a6..1d8b045 100644
--- a/data/dbus/org.manjaro.pamac.service
+++ b/data/dbus/org.manjaro.pamac.service
@@ -1,5 +1,5 @@
 [D-BUS Service]
 Name=org.manjaro.pamac
-Exec=/usr/bin/python /usr/lib/python3.3/site-packages/pamac/pamac-daemon.py
+Exec=/usr/bin/pamac-daemon
 User=root
 SystemdService=pamac.service
diff --git a/data/networkmanager/99_update_pamac_tray b/data/networkmanager/99_update_pamac_tray
index 0bb2e42..3d3fde6 100755
--- a/data/networkmanager/99_update_pamac_tray
+++ b/data/networkmanager/99_update_pamac_tray
@@ -5,6 +5,6 @@ STATUS=$2 # The new state of the interface
 
 case "$STATUS" in
     'up') # $INTERFACE is up
-	pamac-check-updates
+	/usr/bin/pamac-check-updates
 	;;
 esac
diff --git a/data/systemd/pamac.service b/data/systemd/pamac.service
index b93f9be..536e633 100644
--- a/data/systemd/pamac.service
+++ b/data/systemd/pamac.service
@@ -4,4 +4,4 @@ Description=Pamac
 [Service]
 Type=dbus
 BusName=org.manjaro.pamac
-ExecStart=/usr/bin/python /usr/lib/python3.3/site-packages/pamac/pamac-daemon.py
+ExecStart=/usr/bin/pamac-daemon
diff --git a/gui/manager.glade b/gui/manager.glade
index d9e7d02..b755f45 100644
--- a/gui/manager.glade
+++ b/gui/manager.glade
@@ -10,6 +10,7 @@
     <property name="type_hint">dialog</property>
     <property name="skip_taskbar_hint">True</property>
     <property name="urgency_hint">True</property>
+    <property name="deletable">False</property>
     <child internal-child="vbox">
       <object class="GtkBox" id="dialog-vbox1">
         <property name="can_focus">False</property>
diff --git a/pamac-daemon b/pamac-daemon
new file mode 100755
index 0000000..0fa9710
--- /dev/null
+++ b/pamac-daemon
@@ -0,0 +1,335 @@
+#! /usr/bin/python
+# -*-coding:utf-8-*-
+
+import dbus
+import dbus.service
+from dbus.mainloop.glib import DBusGMainLoop
+from gi.repository import GObject
+
+import pyalpm
+import traceback
+from pamac import config, common
+
+class PamacDBusService(dbus.service.Object):
+	def __init__(self):
+		bus=dbus.SystemBus()
+		bus_name = dbus.service.BusName('org.manjaro.pamac', bus)
+		dbus.service.Object.__init__(self, bus_name, '/org/manjaro/pamac')
+		self.t = None
+		self.error = ''
+		self.warning = ''
+		self.action = 'Preparing...'
+		self.icon = '/usr/share/pamac/icons/24x24/status/setup.png'
+		self.target = ''
+		self.percent = 0
+		self.total_size = 0
+		self.already_transferred = 0
+		config.handle.dlcb = self.cb_dl
+		config.handle.totaldlcb = self.totaldlcb
+		config.handle.eventcb = self.cb_event
+		config.handle.questioncb = self.cb_conv
+		config.handle.progresscb = self.cb_progress
+		config.handle.logcb = self.cb_log
+
+	@dbus.service.signal('org.manjaro.pamac')
+	def EmitAction(self, action):
+		pass
+
+	@dbus.service.signal('org.manjaro.pamac')
+	def EmitIcon(self, icon):
+		pass
+
+	@dbus.service.signal('org.manjaro.pamac')
+	def EmitTarget(self, target):
+		pass
+
+	@dbus.service.signal('org.manjaro.pamac')
+	def EmitPercent(self, percent):
+		pass
+
+	def cb_event(self, ID, event, tupel):
+		if ID is 1:
+			self.action = 'Checking dependencies...'
+			self.icon = '/usr/share/pamac/icons/24x24/status/package-search.png'
+		elif ID is 3:
+			self.action = 'Checking file conflicts...'
+			self.icon = '/usr/share/pamac/icons/24x24/status/package-search.png'
+		elif ID is 5:
+			self.action = 'Resolving dependencies...'
+			self.icon = '/usr/share/pamac/icons/24x24/status/setup.png'
+		elif ID is 7:
+			self.action = 'Checking inter conflicts...'
+			self.icon = '/usr/share/pamac/icons/24x24/status/package-search.png'
+		elif ID is 9:
+			self.action = 'Installing...'
+			self.icon = '/usr/share/pamac/icons/24x24/status/package-add.png'
+		elif ID is 10:
+			formatted_event = 'Installed {} ({})'.format(tupel[0].name, tupel[0].version)
+			common.write_log_file(formatted_event)
+			print(formatted_event)
+		elif ID is 11:
+			self.action = 'Removing...'
+			self.icon = '/usr/share/pamac/icons/24x24/status/package-delete.png'
+		elif ID is 12:
+			formatted_event = 'Removed {} ({})'.format(tupel[0].name, tupel[0].version)
+			common.write_log_file(formatted_event)
+			print(formatted_event)
+		elif ID is 13:
+			self.action = 'Upgrading...'
+			self.icon = '/usr/share/pamac/icons/24x24/status/package-update.png'
+		elif ID is 14:
+			formatted_event = 'Upgraded {} ({} -> {})'.format(tupel[1].name, tupel[1].version, tupel[0].version)
+			common.write_log_file(formatted_event)
+			print(formatted_event)
+		elif ID is 15:
+			self.action = 'Checking integrity...'
+			self.icon = '/usr/share/pamac/icons/24x24/status/package-search.png'
+			self.already_transferred = 0
+		elif ID is 17:
+			self.action = 'Loading packages files...'
+			self.icon = '/usr/share/pamac/icons/24x24/status/package-search.png'
+			print('Loading packages files')
+		elif ID is 26:
+			self.action = 'Configuring...'
+			self.icon = '/usr/share/pamac/icons/24x24/status/setup.png'
+			print('Configuring a package')
+		elif ID is 27:
+			print('Downloading a file')
+		else :
+			self.action = ''
+		self.EmitTarget('')
+		self.EmitPercent(str(0))
+		self.EmitAction(self.action)
+		self.EmitIcon(self.icon)
+		print(ID,event)
+
+	def cb_conv(self, *args):
+		print("conversation", args)
+
+	def cb_log(self, level, line):
+		#global t
+		_logmask = pyalpm.LOG_ERROR | pyalpm.LOG_WARNING
+		if not (level & _logmask):
+			return
+		if level & pyalpm.LOG_ERROR:
+			self.error += "ERROR: "+line
+			print(self.error)
+			#t.release()
+		elif level & pyalpm.LOG_WARNING:
+			self.warning += "WARNING: "+line
+		elif level & pyalpm.LOG_DEBUG:
+			line = "DEBUG: " + line
+			print(line)
+		elif level & pyalpm.LOG_FUNCTION:
+			line = "FUNC: " + line
+			print(line)
+
+	def totaldlcb(self, _total_size):
+		self.total_size = _total_size
+
+	def cb_dl(self, _target, _transferred, total):
+		if self.total_size > 0:
+			fraction = (_transferred+self.already_transferred)/self.total_size
+		size = 0
+		if (t.to_remove or t.to_add):
+			for pkg in t.to_remove+t.to_add:
+				if pkg.name+'-'+pkg.version in _target:
+					size = pkg.size
+			if _transferred == size:
+				self.already_transferred += size
+			self.action = 'Downloading '+common.format_size(self.total_size)
+			self.target = _target
+			if fraction > 1:
+				self.percent = 0
+			else:
+				self.percent = fraction
+			self.icon = '/usr/share/pamac/icons/24x24/status/package-download.png'
+		else:
+			self.action = 'Refreshing...'
+			self.target = _target
+			self.percent = 0
+			self.icon = '/usr/share/pamac/icons/24x24/status/refresh-cache.png'
+		self.EmitAction(self.action)
+		self.EmitIcon(self.icon)
+		self.EmitTarget(self.target)
+		self.EmitPercent(str(self.percent))
+
+	def cb_progress(self, _target, _percent, n, i):
+		self.target = _target+' ('+str(i)+'/'+str(n)+')'
+		self.percent = _percent/100
+		self.EmitTarget(self.target)
+		self.EmitPercent(str(self.percent))
+
+	def policykit_test(self, sender,connexion, action):
+		bus = dbus.SystemBus()
+		proxy_dbus = connexion.get_object('org.freedesktop.DBus','/org/freedesktop/DBus/Bus', False)
+		dbus_info = dbus.Interface(proxy_dbus,'org.freedesktop.DBus')
+		sender_pid = dbus_info.GetConnectionUnixProcessID(sender)
+		proxy_policykit = bus.get_object('org.freedesktop.PolicyKit1','/org/freedesktop/PolicyKit1/Authority',False)
+		policykit_authority = dbus.Interface(proxy_policykit,'org.freedesktop.PolicyKit1.Authority')
+
+		Subject = ('unix-process', {'pid': dbus.UInt32(sender_pid, variant_level=1),
+						'start-time': dbus.UInt64(0, variant_level=1)})
+		(is_authorized,is_challenge,details) = policykit_authority.CheckAuthorization(Subject, action, {'': ''}, dbus.UInt32(1), '')
+		return is_authorized
+
+	@dbus.service.signal('org.manjaro.pamac')
+	def EmitAvailableUpdates(self, updates_nb):
+		pass
+
+	def CheckUpdates(self):
+		updates = False
+		for pkg in config.handle.get_localdb().pkgcache:
+			candidate = pyalpm.sync_newversion(pkg, config.handle.get_syncdbs())
+			if candidate:
+				updates = True
+		self.EmitAvailableUpdates(updates)
+
+	@dbus.service.method('org.manjaro.pamac', '', 's')
+	def Refresh(self):
+		global t
+		self.error = ''
+		for db in config.handle.get_syncdbs():
+			try:
+				t = config.handle.init_transaction()
+				db.update(force=False)
+				t.release()
+			except pyalpm.error as e:
+				self.error += ' --> '+str(e)+'\n'
+				t.release()
+				#break
+		self.CheckUpdates()
+		return self.error
+
+	@dbus.service.method('org.manjaro.pamac', 'a{sb}', 's', sender_keyword='sender', connection_keyword='connexion')
+	def Init(self, options, sender=None, connexion=None):
+		global t
+		self.error = ''
+		if self.policykit_test(sender,connexion,'org.manjaro.pamac.init_release'):
+			try:
+				t = config.handle.init_transaction(**options)
+				print('Init:',t.flags)
+			except pyalpm.error as e:
+				self.error += ' --> '+str(e)+'\n'
+			finally:
+				return self.error 
+		else :
+			return 'You are not authorized'
+
+	@dbus.service.method('org.manjaro.pamac', '', 's')
+	def Sysupgrade(self):
+		global t
+		self.error = ''
+		try:
+			t.sysupgrade(downgrade=False)
+			print('to_upgrade:',t.to_add)
+		except pyalpm.error as e:
+			self.error += ' --> '+str(e)+'\n'
+		finally:
+			return self.error
+
+	@dbus.service.method('org.manjaro.pamac', 's', 's')
+	def Remove(self, pkgname):
+		global t
+		self.error = ''
+		try:
+			pkg = config.handle.get_localdb().get_pkg(pkgname)
+			if pkg is not None:
+				t.remove_pkg(pkg)
+		except pyalpm.error as e:
+			self.error += ' --> '+str(e)+'\n'
+		finally:
+			return self.error
+
+	@dbus.service.method('org.manjaro.pamac', 's', 's')
+	def Add(self, pkgname):
+		global t
+		self.error = ''
+		try:
+			for repo in config.handle.get_syncdbs():
+				pkg = repo.get_pkg(pkgname)
+				if pkg:
+					t.add_pkg(pkg)
+					break
+		except pyalpm.error as e:
+			self.error += ' --> '+str(e)+'\n'
+		finally:
+			return self.error
+
+	@dbus.service.method('org.manjaro.pamac', '', 's')
+	def Prepare(self):
+		global t
+		self.error = ''
+		try:
+			t.prepare()
+			print('to_add:',t.to_add)
+			print('to_remove:',t.to_remove)
+		except pyalpm.error as e:
+			print(e)
+			self.error += ' --> '+str(e)+'\n'
+		finally:
+			return self.error 
+
+	@dbus.service.method('org.manjaro.pamac', '', 'as')
+	def To_Remove(self):
+		global t
+		liste = []
+		for pkg in t.to_remove:
+			liste.append(pkg.name)
+		return liste 
+
+	@dbus.service.method('org.manjaro.pamac', '', 'as')
+	def To_Add(self):
+		global t
+		liste = []
+		for pkg in t.to_add:
+			liste.append(pkg.name)
+		return liste 
+
+	@dbus.service.method('org.manjaro.pamac', '', 's', sender_keyword='sender', connection_keyword='connexion')#, async_callbacks=('success', 'nosuccess'))
+	def Commit(self, sender=None, connexion=None):#success, nosuccess, sender=None, connexion=None):
+		global t
+		self.error = ''
+		if self.policykit_test(sender,connexion,'org.manjaro.pamac.commit'): 
+			try:
+				t.commit()
+				#success('')
+			except pyalpm.error as e:
+				#error = traceback.format_exc()
+				self.error += ' --> '+str(e)+'\n'
+				#nosuccess(error)
+			#except dbus.exceptions.DBusException:
+				#pass
+			finally:
+				self.CheckUpdates()
+				return self.error
+		else :
+			return 'You are not authorized'
+
+	@dbus.service.method('org.manjaro.pamac', '', 's', sender_keyword='sender', connection_keyword='connexion')
+	def Release(self, sender=None, connexion=None):
+		global t
+		self.error = ''
+		if self.policykit_test(sender,connexion,'org.manjaro.pamac.init_release'):
+			try:
+				t.release()
+			except pyalpm.error as e:
+				self.error += ' --> '+str(e)+'\n'
+			finally:
+				return self.error 
+		else :
+			return 'You are not authorized'
+
+	@dbus.service.method('org.manjaro.pamac')
+	def StopDaemon(self):
+		global t
+		try:
+			t.release()
+		except:
+			pass
+		mainloop.quit()
+
+DBusGMainLoop(set_as_default=True)
+myservice = PamacDBusService()
+mainloop = GObject.MainLoop()
+mainloop.run()
diff --git a/pamac/main.py b/pamac/main.py
index b0a7ecf..44a6d4e 100644
--- a/pamac/main.py
+++ b/pamac/main.py
@@ -48,15 +48,15 @@ update_label = interface.get_object('update_label')
 installed_column.set_sort_column_id(1)
 name_column.set_sort_column_id(0)
 
-transaction.get_handle()
-tmp_list = []
-for repo in transaction.handle.get_syncdbs():
-	for name, pkgs in repo.grpcache:
-		if not name in tmp_list:
-			tmp_list.append(name)
-tmp_list = sorted(tmp_list)
-for name in tmp_list:
-	groups_list.append([name])
+def get_groups():
+	tmp_list = []
+	for repo in transaction.handle.get_syncdbs():
+		for name, pkgs in repo.grpcache:
+			if not name in tmp_list:
+				tmp_list.append(name)
+	tmp_list = sorted(tmp_list)
+	for name in tmp_list:
+		groups_list.append([name])
 
 pkg_name_list = []
 pkg_object_dict = {}
@@ -210,6 +210,7 @@ def set_desc(pkg, style):
 def set_transaction_sum():
 	transaction_sum.clear()
 	if transaction.to_remove:
+		transaction.to_remove = sorted(transaction.to_remove)
 		transaction_sum.append(['To remove:', transaction.to_remove[0]])
 		i = 1
 		while i < len(transaction.to_remove):
@@ -217,6 +218,7 @@ def set_transaction_sum():
 			i += 1
 		sum_bottom_label.set_markup('')
 	if transaction.to_add:
+		transaction.to_add = sorted(transaction.to_add)
 		installed = []
 		for pkg_object in config.pacman_conf.initialize_alpm().get_localdb().pkgcache:
 			installed.append(pkg_object.name)
@@ -245,9 +247,9 @@ def handle_error(error):
 	global transaction_type
 	global transaction_dict
 	if error:
-		if not 'DBus.Error.NoReply' in str(error):
+		if not 'DBus.Error.NoReply' in error:
 			print('error',error)
-			transaction.ErrorDialog.format_secondary_text('Error:\n'+str(error))
+			transaction.ErrorDialog.format_secondary_text(error)
 			response = transaction.ErrorDialog.run()
 			if response:
 				transaction.ErrorDialog.hide()
@@ -260,6 +262,7 @@ def handle_error(error):
 		transaction_dict.clear()
 		transaction_type = None
 		transaction.update_db()
+		get_groups()
 		set_packages_list()
 	if mode == 'updater':
 		have_updates()
@@ -269,7 +272,7 @@ def handle_reply(reply):
 	global transaction_type
 	global transaction_dict
 	if reply:
-		transaction.ErrorDialog.format_secondary_text('Error:\n'+str(reply))
+		transaction.ErrorDialog.format_secondary_text(reply)
 		response = transaction.ErrorDialog.run()
 		if response:
 			transaction.ErrorDialog.hide()
@@ -280,6 +283,7 @@ def handle_reply(reply):
 	transaction.to_remove = []
 	transaction_dict.clear()
 	transaction.update_db()
+	get_groups()
 	if (transaction_type == "install") or (transaction_type == "remove"):
 		transaction_type = None
 		set_packages_list()
@@ -384,6 +388,7 @@ def finalize():
 def check_conflicts(pkg_list):
 	depends = [pkg_list]
 	warning = ''
+	error = ''
 	pkgs = transaction.handle.get_localdb().search('linux3')
 	installed_linux = []
 	for i in pkgs:
@@ -442,12 +447,19 @@ def check_conflicts(pkg_list):
 															depends[i+1].append(_pkg)
 															transaction.to_add.append(_pkg.name)
 							else:
-								to_add_to_depends = choose_provides(depend)
-								print(to_add_to_depends)
-								for _pkg in to_add_to_depends:
-									if not _pkg.name in transaction.to_add:
-										depends[i+1].append(_pkg)
-										transaction.to_add.append(_pkg.name)
+								already_provided = False
+								for pkgname in transaction.to_add:
+									_pkg = transaction.syncpkgs[pkgname]
+									print('test',transaction.to_add)
+									provide = pyalpm.find_satisfier([_pkg], depend)
+									if provide:
+										already_provided = True
+								if not already_provided:
+									to_add_to_depends = choose_provides(depend)
+									for _pkg in to_add_to_depends:
+										if not _pkg.name in transaction.to_add:
+											depends[i+1].append(_pkg)
+											transaction.to_add.append(_pkg.name)
 						else:
 							depends[i+1].append(provide)
 			for replace in pkg.replaces:
@@ -510,6 +522,20 @@ def check_conflicts(pkg_list):
 		response = transaction.WarningDialog.run()
 		if response:
 			transaction.WarningDialog.hide()
+	for pkgname in transaction.to_remove:
+		pkg = transaction.localpkgs[pkgname]
+		required = pkg.compute_requiredby()
+		if required:
+			str_required = ''
+			for i in required:
+				if str_required:
+					str_required += ', '
+				str_required += i
+			if error:
+				error = error+'\n'
+			error += 'Cannot remove {} because it is needed by {}'.format(pkgname, str_required)
+	if error:
+			handle_error(error)
 
 def choose_provides(name):
 	provides = OrderedDict()
diff --git a/start-pamac-daemon b/start-pamac-daemon
index 5b835e1..efe0c72 100755
--- a/start-pamac-daemon
+++ b/start-pamac-daemon
@@ -1,3 +1,3 @@
 #! /bin/sh
 
-/usr/bin/python /usr/lib/python3.3/site-packages/pamac/pamac-daemon.py &
+/usr/bin/pamac-daemon &