Bug 2414805

Summary:	python-pure-eval fails to build with Python 3.15: pure_eval.utils.CannotEval: CannotEval in 11 tests
Product:	[Fedora] Fedora	Reporter:	Karolina Surma <ksurma>
Component:	python-pure-eval	Assignee:	Lumír Balhar <lbalhar>
Status:	CLOSED RAWHIDE	QA Contact:
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	rawhide	CC:	epel-packagers-sig, ksurma, lbalhar, mhroncok, michel, python-packagers-sig, vstinner
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Last Closed:	2026-03-09 07:54:31 UTC	Type:	Bug
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Bug Blocks:	2412434

Description Karolina Surma 2025-11-13 11:19:15 UTC

python-pure-eval fails to build with Python 3.15.0a1.

FAILED tests/test_core.py::test_eval_attrs - AssertionError: assert 44 in [9,...
FAILED tests/test_core.py::test_is_expression_interesting - pure_eval.utils.C...
FAILED tests/test_getattr_static.py::TestGetattrStatic::test_basic - pure_eva...
FAILED tests/test_getattr_static.py::TestGetattrStatic::test_class_as_property
FAILED tests/test_getattr_static.py::TestGetattrStatic::test_custom_object_dict
FAILED tests/test_getattr_static.py::TestGetattrStatic::test_descriptor - pur...
FAILED tests/test_getattr_static.py::TestGetattrStatic::test_inherited - pure...
FAILED tests/test_getattr_static.py::TestGetattrStatic::test_inherited_slots
FAILED tests/test_getattr_static.py::TestGetattrStatic::test_instance_attr - ...
FAILED tests/test_getattr_static.py::TestGetattrStatic::test_metaclass_dict_as_property
FAILED tests/test_getattr_static.py::TestGetattrStatic::test_mro_as_property

https://docs.python.org/3.15/whatsnew/3.15.html

For the build logs, see:
https://copr-be.cloud.fedoraproject.org/results/@python/python3.15/fedora-rawhide-x86_64/09789827-python-pure-eval/

For all our attempts to build python-pure-eval with Python 3.15, see:
https://copr.fedorainfracloud.org/coprs/g/python/python3.15/package/python-pure-eval/

Testing and mass rebuild of packages is happening in copr.
You can follow these instructions to test locally in mock if your package builds with Python 3.15:
https://copr.fedorainfracloud.org/coprs/g/python/python3.15/

Let us know here if you have any questions.

Python 3.15 is planned to be included in Fedora 45.
To make that update smoother, we're building Fedora packages with all pre-releases of Python 3.15.
A build failure prevents us from testing all dependent packages (transitive [Build]Requires),
so if this package is required a lot, it's important for us to get it fixed soon.

We'd appreciate help from the people who know this package best,
but if you don't want to work on this now, let us know so we can try to work around it on our side.

Comment 1 Lumír Balhar 2026-01-05 12:36:44 UTC

Reported upstream: https://github.com/alexmojaki/pure_eval/issues/23

Comment 2 Victor Stinner 2026-02-04 13:26:04 UTC

> Reported upstream: https://github.com/alexmojaki/pure_eval/issues/23

Python 3.15 support was added upstream:
https://github.com/alexmojaki/pure_eval/commit/cbb525652850e4fd460dcd4b8be4d58c9858f5c4

Comment 3 Karolina Surma 2026-02-25 13:22:22 UTC

https://src.fedoraproject.org/rpms/python-pure-eval/pull-request/4

Comment 4 Lumír Balhar 2026-03-09 07:54:31 UTC

The fix has been merged, and I see the latest two builds succeeded in COPR.