René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"[Bug]: Unit tests: Ubuntu 22.04 lacks dependencies required for recent PyGObject versions","articleBody":"### Bug summary\n\nThe 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.\n\nThis can be observed in recent mainline build logs: https://github.com/matplotlib/matplotlib/actions/runs/13819552073/job/38661296332#step:10:306\n\nThis is a similar issue to #29732, but affecting Ubuntu 22.04.\n\n### Code for reproduction\n\n```Python\nN/A\n```\n\n### Actual outcome\n\nGTK-related tests should run during the GitHub Actions Linux CI test jobs (`tests.yml` workflow).\n\n### Expected outcome\n\nGTK-related tests are skipped due to the inability of the library to load the relevant `glib` functionality.\n\n### Additional information\n\nThe `libgirepository-2.0-0` system package that I believe may be necessary to unblock the `PyGObject\u003e3.52.0` upgrade on Linux platforms is [available on Ubuntu 24.04](https://packages.ubuntu.com/search?suite=noble\u0026searchon=names\u0026keywords=libgirepository) (aka `ubuntu-24.04` or `ubuntu-latest` at the time-of-writing in GitHub Actions' [current runner images](https://github.com/actions/runner-images/blob/2c323d2f049b7899730569dd8948b6552e8c97b6/README.md?plain=1#L23)).\n\nHowever, v2.0 of the same package is [not currently available](https://packages.ubuntu.com/search?suite=jammy\u0026searchon=names\u0026keywords=libgirepository) -- and I would guess is unlikely to become available -- on Ubuntu 22.04.\n\n### Operating system\n\nUbuntu 22.04\n\n### Matplotlib Version\n\n92935966250922b21f688947593da7d1d15b4efc\n\n### Matplotlib Backend\n\nN/A\n\n### Python version\n\n_No response_\n\n### Jupyter version\n\nN/A\n\n### Installation\n\nNone","author":{"url":"https://github.com/jayaddison","@type":"Person","name":"jayaddison"},"datePublished":"2025-03-13T00:37:55.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":2},"url":"https://github.com/29749/matplotlib/issues/29749"}