check-new-release-gtk crashed with ValueError in require_version(): Namespace Gtk is already loaded with version 4.0

This will also produce a Traceback on Ubuntu 21.04 if gir1.2-gtk-4.0 is installed. In addition to the Traceback in comment #1 it can also produce the following one:

"Traceback (most recent call last):\n File \"/usr/lib/ubuntu-release-upgrader/check-new-release-gtk\", line 30, in <module>\n from gi.repository import Gtk\n File \"<frozen importlib._bootstrap>\", line 1007, in _find_and_load\n File \"<frozen importlib._bootstrap>\", line 986, in _find_and_load_unlocked\n File \"<frozen importlib._bootstrap>\", line 664, in _load_unlocked\n File \"<frozen importlib._bootstrap>\", line 627, in _load_backward_compatible\n File \"/usr/lib/python3/dist-packages/gi/importer.py\", line 145, in load_module\n dynamic_module = load_overrides(introspection_module)\n File \"/usr/lib/python3/dist-packages/gi/overrides/__init__.py\", line 118, in load_overrides\n override_mod = importlib.import_module(override_package_name)\n File \"/usr/lib/python3.9/importlib/__init__.py\", line 127, in import_module\n return _bootstrap._gcd_import(name[level:], package, level)\n File \"/usr/lib/python3/dist-packages/gi/overrides/Gtk.py\", line 168, in <module>\n class Container(Gtk.Container, Widget):\n File \"/usr/lib/python3/dist-packages/gi/module.py\", line 123, in __getattr__\n raise AttributeError(\"%r object has no attribute %r\" % (\nAttributeError: ''gi.repository.Gtk'' object has no attribute ''Container''\n"

This bug was fixed in the package ubuntu-release-upgrader - 1:21.10.5

---------------
ubuntu-release-upgrader (1:21.10.5) impish; urgency=medium

  * check-new-release-gtk: use gi.require_version('Gtk', '3.0') to ensure we
    load the right version. (LP: #1936698)
  * Run pre-build.sh: updating mirrors, demotions, and translations.

 -- Brian Murray <email address hidden> Fri, 16 Jul 2021 16:01:02 -0700

Hello Brian, or anyone else affected,

Accepted ubuntu-release-upgrader into hirsute-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/ubuntu-release-upgrader/1:21.04.16 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification-needed-hirsute to verification-done-hirsute. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-hirsute. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

I tested this via an ssh connection and received the AttributeError from the description. I then installed the version of ubuntu-release-upgrader from -proposed and no longer received a traceback.

Do you want to continue? [Y/n] Y
Get:1 http://192.168.10.7/ubuntu hirsute-proposed/main amd64 ubuntu-release-upgrader-gtk all 1:21.04.16 [9,460 B]
Get:2 http://192.168.10.7/ubuntu hirsute-proposed/main amd64 ubuntu-release-upgrader-core all 1:21.04.16 [23.6 kB]
Get:3 http://192.168.10.7/ubuntu hirsute-proposed/main amd64 python3-distupgrade all 1:21.04.16 [102 kB]
Fetched 135 kB in 0s (1,792 kB/s)
(Reading database ... 194561 files and directories currently installed.)
Preparing to unpack .../ubuntu-release-upgrader-gtk_1%3a21.04.16_all.deb ...
Unpacking ubuntu-release-upgrader-gtk (1:21.04.16) over (1:21.04.11) ...
Preparing to unpack .../ubuntu-release-upgrader-core_1%3a21.04.16_all.deb ...
Unpacking ubuntu-release-upgrader-core (1:21.04.16) over (1:21.04.11) ...
Preparing to unpack .../python3-distupgrade_1%3a21.04.16_all.deb ...
Unpacking python3-distupgrade (1:21.04.16) over (1:21.04.11) ...
Setting up python3-distupgrade (1:21.04.16) ...
Setting up ubuntu-release-upgrader-core (1:21.04.16) ...
Setting up ubuntu-release-upgrader-gtk (1:21.04.16) ...
Processing triggers for man-db (2.9.4-2) ...
bdmurray@clean-hirsute-amd64:~$ /usr/lib/ubuntu-release-upgrader/check-new-release-gtk
Unable to init server: Could not connect: Connection refused
Unable to init server: Could not connect: Connection refused
Unable to init server: Could not connect: Connection refused
WARNING:root:timeout reached, exiting

The "Unable to init server" message is due to the fact that I was connected via ssh.

This bug was fixed in the package ubuntu-release-upgrader - 1:21.04.16

---------------
ubuntu-release-upgrader (1:21.04.16) hirsute; urgency=medium

  * DistUpgrade/ReleaseAnnouncement, DistUpgrade/EOLReleaseAnnouncement:
    Update the irc channel server reference to Libera.Chat (LP: #1937852)
  * Run pre-build.sh: updating mirrors, demotions, and translations.

ubuntu-release-upgrader (1:21.04.15) hirsute; urgency=medium

  * check-new-release-gtk: use gi.require_version('Gtk', '3.0') to ensure we
    load the right version. (LP: #1936698)
  * tests/test_sources_list.py: use distro_info to set releases when
    performing some upgrade tests which fixes test failures when precise
    was moved to old-releases, additionally fix some tests for ports.
  * Run pre-build.sh: updating mirrors, demotions, and translations.

 -- Brian Murray <email address hidden> Mon, 26 Jul 2021 13:18:23 -0700

The verification of the Stable Release Update for ubuntu-release-upgrader has completed successfully and the package is now being released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.