Bug#1149307: reprotest: FTBFS against python 3.15rc2 (pip install coverage diffoscope pytest fails with "No package metadata was found")

[Margarita Manterola]

Package: src:reprotest
Version: 0.7.33
User: debian-python at lists.debian.org
Usertags: python3.15
Tags: ftbfs, forky, sid
Severity: important

Hi!

While rebuilding the python related packages against the Python 3.15rc2 
version we found that reprotest fails to build from source:
https://debusine.debian.net/debian/r-python-python3.15/artifact/4857039/

 From the log, the error seems to be:

I: pybuild base:385: cd 
/build/reproducible-path/reprotest-0.7.33+py315.2/.pybuild/cpython3_3.15_reprotest/build; 
tox -c /build/reproducible-path/reprotest-0.7.33+py315.2/tox.ini 
--sitepackages -e py315 -x testenv.passenv+=_PYTHON_HOST_PLATFORM 
--installpkg 
/build/reproducible-path/reprotest-0.7.33+py315.2/.pybuild/cpython3_3.15_reprotest/reprotest-0.7.33-py3-none-any.whl
py315: install_deps .pybuild/cpython3_3.15_reprotest/build> python -I -m 
pip install coverage diffoscope pytest
ERROR: Could not install packages due to an OSError: No package 
metadata was found.

Requirement already satisfied: coverage in 
/usr/lib/python3.15/dist-packages (7.16.1)
Requirement already satisfied: diffoscope in 
/usr/lib/python3/dist-packages (330)
Requirement already satisfied: pytest in /usr/lib/python3/dist-packages 
(9.1.1)
py315: exit 1 (0.62 seconds) 
/build/reproducible-path/reprotest-0.7.33+py315.2> python -I -m pip 
install coverage diffoscope pytest pid=154
  py315: FAIL code 1 (0.86 seconds)
   evaluation failed :( (0.88 seconds)

This fails for 3.15 but works for 3.14, so it's very likely that it is 
caused by one of the changes in the new release.

Setting the severity to important for now. Once Python 3.15 is released 
and later added to python3-defaults and this bug will become release 
critical.

-- 
Regards,
Marga