Bug summary

Recent Azure Pipelines fail with GTK3

gi.PyGIWarning: GioUnix was imported without specifying a version first. Use gi.require_version('GioUnix', '2.0') before import to ensure that the right version gets loaded.

on:

• ubuntu20-24 e.g. https://github.com/matplotlib/matplotlib/actions/runs/17546731657/job/49829814152?pr=30405
• macos-13 e.g. https://github.com/matplotlib/matplotlib/actions/runs/17546731657/job/49829814212?pr=30405

Also for other PRs -> This is an issue in the environment not of particular PRs.