Comment 4 for bug 1169543

I got tired. A ^C gave me:

^CTraceback (most recent call last):
  File "/usr/lib/python3/dist-packages/UpdateManager/UpdateProgress.py", line 78, in _on_backend_done
    self.window_main.start_available(not success)
  File "/usr/lib/python3/dist-packages/UpdateManager/UpdateManager.py", line 186, in start_available
    self.refresh_cache()
  File "/usr/lib/python3/dist-packages/UpdateManager/UpdateManager.py", line 315, in refresh_cache
    self.update_list.update(self.cache, eventloop_callback=iterate)
  File "/usr/lib/python3/dist-packages/UpdateManager/Core/UpdateList.py", line 420, in update
    eventloop_callback)
  File "/usr/lib/python3/dist-packages/UpdateManager/Core/UpdateList.py", line 351, in _make_groups
    if group.is_dependency(cache, pkg, eventloop_callback):
  File "/usr/lib/python3/dist-packages/UpdateManager/Core/UpdateList.py", line 102, in is_dependency
    seen, eventloop_callback):
  File "/usr/lib/python3/dist-packages/UpdateManager/Core/UpdateList.py", line 92, in _is_dependency_helper
    eventloop_callback)):
  File "/usr/lib/python3/dist-packages/UpdateManager/Core/UpdateList.py", line 92, in _is_dependency_helper
    eventloop_callback)):
  File "/usr/lib/python3/dist-packages/UpdateManager/Core/UpdateList.py", line 92, in _is_dependency_helper
    eventloop_callback)):
  File "/usr/lib/python3/dist-packages/UpdateManager/Core/UpdateList.py", line 87, in _is_dependency_helper
    dependencies = candidate.get_dependencies('Depends', 'Recommends')
  File "/usr/lib/python3/dist-packages/apt/package.py", line 443, in get_dependencies
    rawtype=type_))
  File "/usr/lib/python3/dist-packages/apt/package.py", line 82, in __init__
    def __init__(self, name, rel, ver, pre, rawtype=None):