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Date: Tue, 29 Sep 2026 20:05:09 +0200
From: Margarita Manterola <marga@debian.org>
To: submit@bugs.debian.org
Subject: cdlclient: FTBFS against python 3.15rc2 (Cannot import
 'setuptools.build_meta')
Message-ID: <21448cde040b96692e960fc8c4e42cca@debian.org>
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Package: src:cdlclient
Version: 0.10.1-2
User: debian-python@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 cdlclient fails to build from source:
https://debusine.debian.net/debian/r-python-python3.15/artifact/4856091/

 From the log, the error seems to be:

   Traceback (most recent call last):
     File "/usr/lib/python3/dist-packages/pyproject_hooks/_impl.py", line 
399, in _call_hook
       raise BackendUnavailable(
       ...<4 lines>...
       )
   pyproject_hooks._impl.BackendUnavailable: Cannot import 
'setuptools.build_meta'

   TIP pass --env-dir and […] for help debugging a failed build
   ERROR Backend 'setuptools.build_meta' is not available.

I suspect that this issue can be solved by adding a build-dependency on 
python3-setuptools.

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

-- 
Regards,
Marga
]