Testing fails when there is no `keyrings.alt` installed

[mtelka]

$ tox -e py314 -- -v

...

=================================================================================== FAILURES ====================================================================================
_____________________________________________________________________________ test_multiprocess_get _____________________________________________________________________________

    def test_multiprocess_get():
        proc1 = multiprocessing.Process(target=subprocess_get)
        proc1.start()
        proc1.join()
>       assert proc1.exitcode == 0
E       AssertionError: assert 1 == 0
E        +  where 1 = <Process name='Process-1' pid=548565 parent=548553 stopped exitcode=1>.exitcode

tests/test_multiprocess.py:35: AssertionError
----------------------------------------------------------------------------- Captured stderr call ------------------------------------------------------------------------------
Process Process-1:
Traceback (most recent call last):
  File "/usr/lib/python3.14/multiprocessing/process.py", line 320, in _bootstrap
    self.run()
    ~~~~~~~~^^
  File "/usr/lib/python3.14/multiprocessing/process.py", line 108, in run
    self._target(*self._args, **self._kwargs)
    ~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/data/builds/ul-workspace/components/python/keyring/keyring-25.7.0/tests/test_multiprocess.py", line 20, in subprocess_get
    keyring.get_password('test_app', 'test_user')
    ~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/data/builds/ul-workspace/components/python/keyring/keyring-25.7.0/keyring/core.py", line 65, in get_password
    return get_keyring().get_password(service_name, username)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^
  File "/data/builds/ul-workspace/components/python/keyring/keyring-25.7.0/keyring/backends/fail.py", line 28, in get_password
    raise NoKeyringError(msg)
keyring.errors.NoKeyringError: No recommended backend was available. Install a recommended 3rd party backend package; or, install the keyrings.alt package if you want to use the non-recommended backends. See https://pypi.org/project/keyring for details.
____________________________________________________________________ test_multiprocess_get_after_native_get _____________________________________________________________________

    def test_multiprocess_get_after_native_get():
        keyring.get_password('test_app', 'test_user')
>       test_multiprocess_get()

tests/test_multiprocess.py:40: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

    def test_multiprocess_get():
        proc1 = multiprocessing.Process(target=subprocess_get)
        proc1.start()
        proc1.join()
>       assert proc1.exitcode == 0
E       AssertionError: assert 1 == 0
E        +  where 1 = <Process name='Process-2' pid=548569 parent=548553 stopped exitcode=1>.exitcode

tests/test_multiprocess.py:35: AssertionError
----------------------------------------------------------------------------- Captured stderr call ------------------------------------------------------------------------------
Process Process-2:
Traceback (most recent call last):
  File "/usr/lib/python3.14/multiprocessing/process.py", line 320, in _bootstrap
    self.run()
    ~~~~~~~~^^
  File "/usr/lib/python3.14/multiprocessing/process.py", line 108, in run
    self._target(*self._args, **self._kwargs)
    ~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/data/builds/ul-workspace/components/python/keyring/keyring-25.7.0/tests/test_multiprocess.py", line 20, in subprocess_get
    keyring.get_password('test_app', 'test_user')
    ~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/data/builds/ul-workspace/components/python/keyring/keyring-25.7.0/keyring/core.py", line 65, in get_password
    return get_keyring().get_password(service_name, username)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^
  File "/data/builds/ul-workspace/components/python/keyring/keyring-25.7.0/keyring/backends/fail.py", line 28, in get_password
    raise NoKeyringError(msg)
keyring.errors.NoKeyringError: No recommended backend was available. Install a recommended 3rd party backend package; or, install the keyrings.alt package if you want to use the non-recommended backends. See https://pypi.org/project/keyring for details.

I noticed that it is enough to install keyrings.alt on the host machine. The installation to tox's virtualenv is not needed.

[mtelka]

This is maybe related: #568