old_contents: #!/usr/bin/python2 -O
  # vim: fileencoding=utf-8
  
  #
  # The Qubes OS Project, https://www.qubes-os.org/
  #
  # Copyright (C) 2014-2015  Joanna Rutkowska <joanna@invisiblethingslab.com>
  # Copyright (C) 2014       Marek Marczykowski-Górecki
  #                               <marmarek@invisiblethingslab.com>
  # Copyright (C) 2015       Wojtek Porczyk <woju@invisiblethingslab.com>
  #
  # 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 2 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 copy of the GNU General Public License along
  # with this program; if not, write to the Free Software Foundation, Inc.,
  # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  #
  
  '''Qubes Manager hooks.
  
  .. warning:: API defined here is not declared stable.
  '''
  
  import qubes.ext
  import dbus
  
  
  class QubesManager(qubes.ext.Extension):
      def __init__(self, *args, **kwargs):
          super(QubesManager, self).__init__(*args, **kwargs)
          self._system_bus = dbus.SystemBus()
  
      # pylint: disable=no-self-use,unused-argument,too-few-public-methods
  
      @qubes.ext.handler('status:error')
      def on_status_error(self, vm, status, message):
          try:
              qubes_manager = self._system_bus.get_object(
                  'org.qubesos.QubesManager',
                  '/org/qubesos/QubesManager')
              qubes_manager.notify_error(vm.name, message,
                  dbus_interface='org.qubesos.QubesManager')
          except dbus.DBusException:
              # ignore the case when no qubes-manager is running
              pass
  
      @qubes.ext.handler('status:no-error')
      def on_status_no_error(self, vm, status, message):
          try:
              qubes_manager = self._system_bus.get_object(
                  'org.qubesos.QubesManager',
                  '/org/qubesos/QubesManager')
              qubes_manager.clear_error_exact(vm.name, message,
                  dbus_interface='org.qubesos.QubesManager')
          except dbus.DBusException:
              # ignore the case when no qubes-manager is running
              pass
  
new_contents: #!/usr/bin/python2 -O
  # vim: fileencoding=utf-8
  
  #
  # The Qubes OS Project, https://www.qubes-os.org/
  #
  # Copyright (C) 2014-2015  Joanna Rutkowska <joanna@invisiblethingslab.com>
  # Copyright (C) 2014       Marek Marczykowski-Górecki
  #                               <marmarek@invisiblethingslab.com>
  # Copyright (C) 2015       Wojtek Porczyk <woju@invisiblethingslab.com>
  #
  # 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 2 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 copy of the GNU General Public License along
  # with this program; if not, write to the Free Software Foundation, Inc.,
  # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  #
  
  '''Qubes Manager hooks.
  
  .. warning:: API defined here is not declared stable.
  '''
  
  import qubes.ext
  import dbus
  
  
  class QubesManager(qubes.ext.Extension):
      def __init__(self, *args, **kwargs):
          super(QubesManager, self).__init__(*args, **kwargs)
          self._system_bus = dbus.SystemBus()
  
      # pylint: disable=no-self-use,unused-argument,too-few-public-methods
  
      @qubes.ext.handler('status:error')
      def on_status_error(self, vm, event, status, message):
          try:
              qubes_manager = self._system_bus.get_object(
                  'org.qubesos.QubesManager',
                  '/org/qubesos/QubesManager')
              qubes_manager.notify_error(vm.name, message,
                  dbus_interface='org.qubesos.QubesManager')
          except dbus.DBusException:
              # ignore the case when no qubes-manager is running
              pass
  
      @qubes.ext.handler('status:no-error')
      def on_status_no_error(self, vm, event, status, message):
          try:
              qubes_manager = self._system_bus.get_object(
                  'org.qubesos.QubesManager',
                  '/org/qubesos/QubesManager')
              qubes_manager.clear_error_exact(vm.name, message,
                  dbus_interface='org.qubesos.QubesManager')
          except dbus.DBusException:
              # ignore the case when no qubes-manager is running
              pass
  
subject: fix events signature