Comment 0 for bug 1338482

System: Xubuntu 14.10
apturl version: 0.5.2ubuntu4

If you'll tell apturl to use the Synaptic backend (by either removing aptdaemon from the system or specifying UPDATE_MANAGER_FORCE_BACKEND_SYNAPTIC=1 before apturl in the terminal), it crashes with this error:

$ UPDATE_MANAGER_FORCE_BACKEND_SYNAPTIC=1 apturl apt://gcalctool
/usr/lib/python3/dist-packages/AptUrl/gtk/GtkUI.py:4: PyGIDeprecationWarning: Since version 3.11, calling threads_init is no longer needed. See: https://wiki.gnome.org/PyGObject/Threading
  GObject.threads_init()
Traceback (most recent call last):
  File "/usr/bin/apturl-gtk", line 43, in <module>
    ui = GtkUI()
  File "/usr/lib/python3/dist-packages/AptUrl/gtk/GtkUI.py", line 38, in __init__
    self.backend = get_backend(self.dia)
  File "/usr/lib/python3/dist-packages/AptUrl/gtk/backend/__init__.py", line 49, in get_backend
    return InstallBackendSynaptic(*args, **kwargs)
TypeError: __init__() missing 1 required positional argument: 'action'