Arch Linux

Description:

The package python-keyring does not list python-dbus as a dependency. If python-keyring is installed, but python-dbus is not, the `keyring` CLI application crashes with the python stacktrace listed below, even when performing tasks that would not even require DBus functionality, e.g. `keyring --help`. Installing the package `python-dbus` fixes the issue. `python-dbus` should be listed as a dependency of `python-keyring`.

Traceback (most recent call last):
File "/usr/lib/python3.6/site-packages/keyring/backends/kwallet.py", line 37, in priority
bus = dbus.SessionBus(mainloop=DBusGMainLoop())
AttributeError: module 'dbus' has no attribute 'SessionBus'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/usr/bin/keyring", line 11, in <module>
load_entry_point('keyring==12.2.1', 'console_scripts', 'keyring')()
File "/usr/lib/python3.6/site-packages/pkg_resources/__init__.py", line 476, in load_entry_point
return get_distribution(dist).load_entry_point(group, name)
File "/usr/lib/python3.6/site-packages/pkg_resources/__init__.py", line 2700, in load_entry_point
return ep.load()
File "/usr/lib/python3.6/site-packages/pkg_resources/__init__.py", line 2318, in load
return self.resolve()
File "/usr/lib/python3.6/site-packages/pkg_resources/__init__.py", line 2324, in resolve
module = __import__(self.module_name, fromlist=['__name__'], level=0)
File "/usr/lib/python3.6/site-packages/keyring/__init__.py", line 3, in <module>
from .core import (set_keyring, get_keyring, set_password, get_password,
File "/usr/lib/python3.6/site-packages/keyring/core.py", line 154, in <module>
init_backend()
File "/usr/lib/python3.6/site-packages/keyring/core.py", line 67, in init_backend
keyrings = filter(limit, backend.get_all_keyring())
File "/usr/lib/python3.6/site-packages/keyring/util/__init__.py", line 21, in wrapper
func.always_returns = func(*args, **kwargs)
File "/usr/lib/python3.6/site-packages/keyring/backend.py", line 173, in get_all_keyring
exceptions=TypeError))
File "/usr/lib/python3.6/site-packages/keyring/util/__init__.py", line 31, in suppress_exceptions
for callable in callables:
File "/usr/lib/python3.6/site-packages/keyring/backend.py", line 165, in is_class_viable
keyring_cls.priority
File "/usr/lib/python3.6/site-packages/keyring/util/properties.py", line 24, in __get__
return self.fget.__get__(None, owner)()
File "/usr/lib/python3.6/site-packages/keyring/backends/kwallet.py", line 137, in priority
return super(DBusKeyringKWallet4, cls).priority - 1
File "/usr/lib/python3.6/site-packages/keyring/util/properties.py", line 24, in __get__
return self.fget.__get__(None, owner)()
File "/usr/lib/python3.6/site-packages/keyring/backends/kwallet.py", line 38, in priority
except dbus.DBusException as exc:
AttributeError: module 'dbus' has no attribute 'DBusException'


Additional info:
- python-keyring 12.2.1-1


Steps to reproduce:
1. `pacman -S python-keyring`
2. `keyring --help` -> Crash
3. `python -S python-dbus`
4. `keyring --help` -> Works