[Bugs] #1997 UNSP: fails to start if HAL not installed

[Sugar Labs Bugs]

#1997: fails to start if HAL not installed
------------------------------------------+---------------------------------
    Reporter:  sascha_silbe               |          Owner:  sayamindu                  
        Type:  defect                     |         Status:  new                        
    Priority:  Unspecified by Maintainer  |      Milestone:  Unspecified by Release Team
   Component:  Read                       |        Version:  Git as of bugdate          
    Severity:  Blocker                    |       Keywords:                             
Distribution:  Unspecified                |   Status_field:  New                        
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 Read fails to start if HAL is not installed:

 {{{
 Traceback (most recent call last):
   File "/home/sascha.silbe/sugar-jhbuild/install/bin/sugar-activity", line
 21, in <module>
     main.main()
   File "/home/sascha.silbe/sugar-jhbuild/install/lib/python2.5/site-
 packages/sugar/activity/main.py", line 159, in main
     create_activity_instance(activity_constructor, activity_handle)
   File "/home/sascha.silbe/sugar-jhbuild/install/lib/python2.5/site-
 packages/sugar/activity/main.py", line 37, in create_activity_instance
     activity = constructor(handle)
   File "/home/sascha.silbe/sugar-
 jhbuild/install/share/sugar/activities/Read.activity/readactivity.py",
 line 257, in __init__
     self._topbar = TopBar()
   File "/home/sascha.silbe/sugar-
 jhbuild/install/share/sugar/activities/Read.activity/readtopbar.py", line
 185, in __init__
     _TopBar.__init__(self)
   File "/home/sascha.silbe/sugar-
 jhbuild/install/share/sugar/activities/Read.activity/readtopbar.py", line
 139, in __init__
     '/org/freedesktop/Hal/Manager')
   File "/usr/lib/pymodules/python2.5/dbus/bus.py", line 244, in get_object
     follow_name_owner_changes=follow_name_owner_changes)
   File "/usr/lib/pymodules/python2.5/dbus/proxies.py", line 241, in
 __init__
     self._named_service = conn.activate_name_owner(bus_name)
   File "/usr/lib/pymodules/python2.5/dbus/bus.py", line 183, in
 activate_name_owner
     self.start_service_by_name(bus_name)
   File "/usr/lib/pymodules/python2.5/dbus/bus.py", line 281, in
 start_service_by_name
     'su', (bus_name, flags)))
   File "/usr/lib/pymodules/python2.5/dbus/connection.py", line 630, in
 call_blocking
     message, timeout)
 dbus.exceptions.DBusException: org.freedesktop.DBus.Error.ServiceUnknown:
 The name org.freedesktop.Hal was not provided by any .service files
 }}}

 HAL has been
 [http://lists.freedesktop.org/archives/hal/2008-May/011560.html
 deprecated] by its own authors so we shouldn't rely on it. It also won't
 be available in chroots which makes testing Read much harder.

-- 
Ticket URL: <http://bugs.sugarlabs.org/ticket/1997>
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