Bug summary

The recently-released Python PyGObject package v3.52.0 requires a major upgrade of the system glib dependencies. For example, it expects to find girepository-2.0 where previously girepository-1.0 would satisfy dependencies.

This can be observed in recent mainline build logs: https://github.com/matplotlib/matplotlib/actions/runs/13819552073/job/38661296332#step:10:306

This is a similar issue to #29732, but affecting Ubuntu 22.04.

Code for reproduction

N/A

Actual outcome

GTK-related tests should run during the GitHub Actions Linux CI test jobs (tests.yml workflow).

Expected outcome

GTK-related tests are skipped due to the inability of the library to load the relevant glib functionality.

Additional information

The libgirepository-2.0-0 system package that I believe may be necessary to unblock the PyGObject>3.52.0 upgrade on Linux platforms is available on Ubuntu 24.04 (aka ubuntu-24.04 or ubuntu-latest at the time-of-writing in GitHub Actions' current runner images).

However, v2.0 of the same package is not currently available -- and I would guess is unlikely to become available -- on Ubuntu 22.04.

Operating system

Ubuntu 22.04

Matplotlib Version

9293596

Matplotlib Backend

N/A

Python version

No response

Jupyter version

N/A

Installation

None