Hi!

While rebuilding the python related packages against the Python 3.15rc2
version we found that manila fails to build from source:
https://debusine.debian.net/debian/r-python-python3.15/artifact/4924338/

 From the log, the error seems to be:
======================================================================
FAIL:
manila.tests.cmd.test_status.TestUpgradeChecks.test_upgrade_checks_policy_json_check_succeeds
manila.tests.cmd.test_status.TestUpgradeChecks.test_upgrade_checks_policy_json_check_succeeds
----------------------------------------------------------------------
testtools.testresult.real._StringException: Traceback (most recent call
last):
   File "/usr/lib/python3/dist-packages/prettytable/prettytable.py", line
741, in _validate_hrules
     assert val in list(HRuleStyle)
            ^^^^^^^^^^^^^^^^^^^^^^^
AssertionError

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
   File
"/build/reproducible-path/manila-23.0.0/manila/tests/cmd/test_status.py",
line 41, in test_upgrade_checks_policy_json_check_succeeds
     result = self.cmd.check()
   File
"/usr/lib/python3/dist-packages/oslo_upgradecheck/upgradecheck.py", line
177, in check
     t = prettytable.PrettyTable(
         [str(self.display_title)], hrules=prettytable.ALL
     )
   File "/usr/lib/python3/dist-packages/prettytable/prettytable.py", line
400, in __init__
     self._validate_option(option, kwargs[option])
     ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^
   File "/usr/lib/python3/dist-packages/prettytable/prettytable.py", line
586, in _validate_option
     self._validate_hrules(option, val)
     ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^
   File "/usr/lib/python3/dist-packages/prettytable/prettytable.py", line
744, in _validate_hrules
     raise ValueError(msg)
ValueError: Invalid value for hrules. Must be HRuleStyle.
----------------------------------------------------------------------
Ran 12413 tests in 74.564s

FAILED (failures=1, skipped=19)

Please note that while we ran into this error during the rebuild against
Python 3.15, that doesn't mean that the root cause for the failure is
necessarily the new Python version.

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.

Hello,

Bug #1149600 in python-oslo.upgradecheck 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/openstack-team/oslo/python-oslo.upgradecheck/-/commit/e65f0578795c361ac2ffbacd8e3778204af7930b
------------------------------------------------------------------------
Fix Python 3.15 lazy_import prettytable.ALL breakage

Under Python 3.15, lazy imports turn the deprecated
prettytable.ALL constant into a lazy_import proxy object
instead of the plain int 1, which then fails prettytable's
hrules validation, breaking upgrade checks of reverse
build-deps like manila (Closes: #1149600):
- use-prettytable-HRuleStyle-ALL.patch
------------------------------------------------------------------------

(this message was generated automatically)
-- 
Greetings

https://bugs.debian.org/1149600

We believe that the bug you reported is fixed in the latest version of
python-oslo.upgradecheck, 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 1149600@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Thomas Goirand <zigo@debian.org> (supplier of updated python-oslo.upgradecheck 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: Tue, 06 Oct 2026 17:35:15 +0200
Source: python-oslo.upgradecheck
Architecture: source
Version: 2.8.0-3
Distribution: unstable
Urgency: medium
Maintainer: Debian OpenStack <team+openstack@tracker.debian.org>
Changed-By: Thomas Goirand <zigo@debian.org>
Closes: 1149600
Changes:
 python-oslo.upgradecheck (2.8.0-3) unstable; urgency=medium
 .
   * Fixed FTBFS of reverse build-deps (manila) against Python 3.15: use
     prettytable.HRuleStyle.ALL instead of the deprecated prettytable.ALL
     constant, which resolves to a lazy_import proxy object under Python
     3.15 and fails prettytable's hrules validation (Closes: #1149600).
     Thanks Margarita Manterola for the bug report:
       - use-prettytable-HRuleStyle-ALL.patch
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 47c485a0795ddda382d35dcf405dd3bffd20eb5f 4216 python-oslo.upgradecheck_2.8.0-3.debian.tar.xz
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 7f0ab104a9b069a4eaacc1138324efd8b5a6c2e58f3887eae1fc9ef699a0ccba 4216 python-oslo.upgradecheck_2.8.0-3.debian.tar.xz
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 059958dde38eba31c621fabcf672ccb3 4216 python optional python-oslo.upgradecheck_2.8.0-3.debian.tar.xz
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