Hi!

While rebuilding the python related packages against the Python 3.15rc2
version we found that poetry fails to build from source [1].

To fix it, I've added a backport of upstream commit f47e6b2f: [PATCH]
Fix MetadataNotFound from importlib.metadata on Python 3.15+ (#10860)
[2].

I've applied the upstream fix in the sandbox [3] to verify that it
builds successfully, please consider applying the patch to support the
upcoming 3.15 version.

BTW, upstream is already at 2.4.3, which includes this fix and other
fixes. Upgrading to the latest upstream version would also fix this
issue.

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

Happy hacking,

[1]: https://debusine.debian.net/debian/r-python-python3.15/artifact/4524773/
[2]: https://github.com/python-poetry/poetry/commit/f47e6b2f73e6ea6e1f81fa8963ec0fde30815345
[3]: https://debusine.debian.net/debian/r-python-python3.15/

Hello,

Bug #1147234 in poetry reported by you has been fixed in the
Git repository and is awaiting an upload. You can see the commit
message below and you can check the diff of the fix at:

https://salsa.debian.org/python-team/packages/poetry/-/commit/c63d3612c7049f562a4f3b74756ce72125f81998
------------------------------------------------------------------------
Merge branch 'debian/master' into 'debian/master'

Fix FTBFS with Python 3.15 (Closes: #1147234)

See merge request python-team/packages/poetry!2
------------------------------------------------------------------------

(this message was generated automatically)
-- 
Greetings

https://bugs.debian.org/1147234

We believe that the bug you reported is fixed in the latest version of
poetry, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 1147234@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Nico Della Torre <nicoz91@ubuntu.com> (supplier of updated poetry package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)
Format: 1.8
Date: Sun, 18 Oct 2026 00:43:18 +0200
Source: poetry
Architecture: source
Version: 2.3.4-3
Distribution: unstable
Urgency: medium
Maintainer: Debian Python Team <team+python@tracker.debian.org>
Changed-By: Nico Della Torre <nicoz91@ubuntu.com>
Closes: 1147234
Changes:
 poetry (2.3.4-3) unstable; urgency=medium
 .
   * Team upload.
   * Backport upstream commit f47e6b2f: handle importlib.metadata raising
     MetadataNotFound for a dist-info directory without METADATA on
     Python 3.15+ (Closes: #1147234)
   * debian/patches/fix-tests.patch: accept the version reported by
     Python.get_system_python() in test_python_get_preferred_default,
     which drops the pre-release suffix (e.g. 3.15.0rc1).
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