Maintenance | add Pillow 12 support | drop Python 3.9#177
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Stormheg merged 7 commits intowagtail:mainfrom Oct 26, 2025
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Maintenance | add Pillow 12 support | drop Python 3.9#177Stormheg merged 7 commits intowagtail:mainfrom
Stormheg merged 7 commits intowagtail:mainfrom
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Discussed with the Wagtail core team. For a good overview of why, this article is pretty good: https://iscinumpy.dev/post/bound-version-constraints/#tldr
SebCorbin
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Looks like I jinxed myself by saying:
Because #178 is caused by pillow-heif 1.0.0 being used... I don't see a reason to hold pillow-heif back to an older version to fix an issue that appears to be caused by a faulty image file which should not have worked. Will proceed with raising the minimum version as planned. |
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See Pillow 12 release notes - nothing that affects us this time.
Python 3.9 has reached end of life and is no longer supported. Python 3.14 support is no longer provisional.
I've decided to simplify the pillow-heif requirement a bit and raise it at the same time to a sensible value. I don't see any reason why anyone would still be on an older version and hence don't believe this will cause issues. All the wheels for platforms we support are present, no one should suffer a negative effect from this change.
Verified this patch is okay by installing an editable a patched version in one of my Wagtail projects, deleted renditions and browsed the site to check if anything is off.