Autopkgtest regression in python3.11

[Olivier Gayot]

Autopkgtest fails with Python 3.11 with the following exception:

ERROR: test_set_gnome_keyboard_layout_to_existing_layout (test_ubi_console_setup.TestPage.test_set_gnome_keyboard_layout_to_existing_layout)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/usr/lib/python3.11/unittest/mock.py", line 1366, in patched
    with self.decoration_helper(patched,
  File "/usr/lib/python3.11/contextlib.py", line 137, in __enter__
    return next(self.gen)
           ^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/unittest/mock.py", line 1348, in decoration_helper
    arg = exit_stack.enter_context(patching)
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/contextlib.py", line 502, in enter_context
    result = _enter(cm)
             ^^^^^^^^^^
  File "/usr/lib/python3.11/unittest/mock.py", line 1421, in __enter__
    self.target = self.getter()
                  ^^^^^^^^^^^^^
  File "/usr/lib/python3.11/pkgutil.py", line 688, in resolve_name
    raise ValueError(f'invalid format: {name!r}')
ValueError: invalid format: 'ubi-console-setup.gsettings'

Since Python3.11, unittest.mock uses pkgutil.resolve_name which only accepts valid python module identifiers.

The change was introduced as part of:
 * github issue: https://github.com/python/cpython/issues/88852
 * github PR: https://github.com/python/cpython/pull/18544

[Steve Langasek (vorlon)]

Uploaded, however the package failed to build in lunar: https://launchpad.net/ubuntu/+source/ubiquity/23.04.3/+build/25524478

[Olivier Gayot (ogayot)]

Thanks! I've had a look into the build failure on amd64.
<something> has happened during the processing of .po files but I don't know exactly what ; and I wasn't able to reproduce the issue locally nor on a PPA build.

The build got retried and failed again (still while processing .po files but at a later stage).

I've created another PR which adds more logging to the failing script.

https://code.launchpad.net/~ogayot/ubiquity/+git/ubiquity/+merge/436424

[Olivier Gayot (ogayot)]

I looked into it again and although the diff in my merge proposal was very small, the diff of the upload is much larger (> 4 MiB):

https://launchpadlibrarian.net/648124240/ubiquity_23.04.2_23.04.3.diff.gz

Have I done something wrong?

[Launchpad Janitor (janitor)]

This bug was fixed in the package ubiquity - 23.04.4

---------------
ubiquity (23.04.4) lunar; urgency=medium

  * mktemplates.base: add more logging to ease diagnosis for failed builds

 -- Olivier Gayot <email address hidden> Fri, 27 Jan 2023 07:47:28 -0800