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Bug#1146433: python-cliff: causes breakage in other packages with python 3.15rc1

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  Bug#1146433: python-cliff: causes breakage in other packages with python 3.15rc1 Maximiliano Curia <maxy@debian.org> - 2026-09-01 21:50 +0200

#1307414 — Bug#1146433: python-cliff: causes breakage in other packages with python 3.15rc1

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Package: src:python-cliff
Version: 4.13.3-1
User: debian-python@lists.debian.org
Usertags: python3.15
Tags: patch, ftbfs, forky, sid

Hi!

While rebuilding the python related packages against the Python 3.15rc1
version we found that python-cliff builds, but then causes
python-osc-lib to break [1]. 

This is because the `get_distributions_by_modules` function tries to
read the package metadata, and starting from Python 3.15 this operation
fails when the metadata isn't present (previously invalid reads returned
None). [2]

I've worked around this problem by returning an empty dictionary if the
values can't be read. This is not a proper fix, but simply ignoring data
that was already invalid.

I applied this fix in the sandbox [3] to be able to build the packages
that depend on python-cliff, please consider applying the patch to
support the upcoming 3.15 version.

Happy hacking,

[1]: https://debusine.debian.net/debian/r-python-python3.15/artifact/4582881/
[2]: https://docs.python.org/3.15/whatsnew/3.15.html#importlib-metadata
[3]: https://debusine.debian.net/debian/r-python-python3.15/

-- 
"Can you imagine what I would do if I could do all I can?" -- Sun Tzu
Saludos /\/\ /\ >< `/

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