[Bug 1936488] [NEW] Ubiquity fails to build with GTK4

[Jean-Baptiste Lallement]

Public bug reported:

With latest updates applied on impish Ubiquity fails to build with:

make: Leaving directory '/home/j-lallement/shared/Ubuntu/Dev/ubiquity/src'
/home/j-lallement/shared/Ubuntu/Dev/ubiquity/tests/test_gtkwidgets.py:9: PyGIWarning: Gtk was imported without specifying a version first. Use gi.require_version('Gtk', '4.0') before import to ensure that the right version gets loaded.
  from gi.repository import Gtk, TimezoneMap
/home/j-lallement/shared/Ubuntu/Dev/ubiquity/tests/test_usersetup.py:6: PyGIWarning: UbiquityMockResolver was imported without specifying a version first. Use gi.require_version('UbiquityMockResolver', '1.0') before import to ensure that the right version gets loaded.
  from gi.repository import UbiquityMockResolver
Traceback (most recent call last):
  File "/home/j-lallement/shared/Ubuntu/Dev/ubiquity/./tests/run", line 121, in <module>
    suite = unittest.TestLoader().loadTestsFromNames(tests)
  File "/usr/lib/python3.9/unittest/loader.py", line 220, in loadTestsFromNames
    suites = [self.loadTestsFromName(name, module) for name in names]
  File "/usr/lib/python3.9/unittest/loader.py", line 220, in <listcomp>
    suites = [self.loadTestsFromName(name, module) for name in names]
  File "/usr/lib/python3.9/unittest/loader.py", line 154, in loadTestsFromName
    module = __import__(module_name)
  File "/home/j-lallement/shared/Ubuntu/Dev/ubiquity/tests/test_usersetup.py", line 9, in <module>
    from ubiquity import gtkwidgets, plugin_manager
  File "/home/j-lallement/shared/Ubuntu/Dev/ubiquity/./ubiquity/gtkwidgets.py", line 38, in <module>
    class StylizedFrame(Gtk.Alignment):
  File "/usr/lib/python3/dist-packages/gi/overrides/__init__.py", line 32, in __getattr__
    return getattr(self._introspection_module, name)
  File "/usr/lib/python3/dist-packages/gi/module.py", line 123, in __getattr__
    raise AttributeError("%r object has no attribute %r" % (
AttributeError: 'gi.repository.Gtk' object has no attribute 'Alignment'


It should be fixed by setting the version of GTK to 3

** Affects: ubiquity (Ubuntu)
     Importance: Critical
         Status: New


** Tags: rls-ii-incoming

** Changed in: ubiquity (Ubuntu)
   Importance: Undecided => High

** Changed in: ubiquity (Ubuntu)
   Importance: High => Critical

** Tags added: rls-ii-incoming

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https://bugs.launchpad.net/bugs/1936488

Title:
  Ubiquity fails to build with GTK4

Status in ubiquity package in Ubuntu:
  New

Bug description:
  With latest updates applied on impish Ubiquity fails to build with:

  make: Leaving directory '/home/j-lallement/shared/Ubuntu/Dev/ubiquity/src'
  /home/j-lallement/shared/Ubuntu/Dev/ubiquity/tests/test_gtkwidgets.py:9: PyGIWarning: Gtk was imported without specifying a version first. Use gi.require_version('Gtk', '4.0') before import to ensure that the right version gets loaded.
    from gi.repository import Gtk, TimezoneMap
  /home/j-lallement/shared/Ubuntu/Dev/ubiquity/tests/test_usersetup.py:6: PyGIWarning: UbiquityMockResolver was imported without specifying a version first. Use gi.require_version('UbiquityMockResolver', '1.0') before import to ensure that the right version gets loaded.
    from gi.repository import UbiquityMockResolver
  Traceback (most recent call last):
    File "/home/j-lallement/shared/Ubuntu/Dev/ubiquity/./tests/run", line 121, in <module>
      suite = unittest.TestLoader().loadTestsFromNames(tests)
    File "/usr/lib/python3.9/unittest/loader.py", line 220, in loadTestsFromNames
      suites = [self.loadTestsFromName(name, module) for name in names]
    File "/usr/lib/python3.9/unittest/loader.py", line 220, in <listcomp>
      suites = [self.loadTestsFromName(name, module) for name in names]
    File "/usr/lib/python3.9/unittest/loader.py", line 154, in loadTestsFromName
      module = __import__(module_name)
    File "/home/j-lallement/shared/Ubuntu/Dev/ubiquity/tests/test_usersetup.py", line 9, in <module>
      from ubiquity import gtkwidgets, plugin_manager
    File "/home/j-lallement/shared/Ubuntu/Dev/ubiquity/./ubiquity/gtkwidgets.py", line 38, in <module>
      class StylizedFrame(Gtk.Alignment):
    File "/usr/lib/python3/dist-packages/gi/overrides/__init__.py", line 32, in __getattr__
      return getattr(self._introspection_module, name)
    File "/usr/lib/python3/dist-packages/gi/module.py", line 123, in __getattr__
      raise AttributeError("%r object has no attribute %r" % (
  AttributeError: 'gi.repository.Gtk' object has no attribute 'Alignment'


  It should be fixed by setting the version of GTK to 3

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