Bug 2328706

Summary: python-makefun fails to build with Python 3.14: RuntimeError: There is no current event loop in thread 'MainThread'.
Product: [Fedora] Fedora Reporter: Karolina Surma <ksurma>
Component: python-makefunAssignee: Zbigniew Jędrzejewski-Szmek <zbyszek>
Status: CLOSED WORKSFORME QA Contact: Fedora Extras Quality Assurance <extras-qa>
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Version: rawhideCC: fti-bugs, ksurma, mhroncok, orion, python-packagers-sig, zbyszek
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Last Closed: 2025-06-12 09:39:20 UTC Type: Bug
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Bug Blocks: 2322407, 2339432, 2339435, 2371903, 2372076, 2372078, 2372081    

Description Karolina Surma 2024-11-25 16:29:40 UTC
python-makefun fails to build with Python 3.14.0a2.

FAILED tests/test_generators_coroutines.py::test_native_coroutine - RuntimeError: There is no current event loop in thread 'MainThread'.
FAILED tests/test_generators_coroutines.py::test_issue_96 - RuntimeError: There is no current event loop in thread 'MainThread'.
FAILED tests/test_issues.py::test_issue_77_async_generator_wraps - RuntimeError: There is no current event loop in thread 'MainThread'.
FAILED tests/test_issues.py::test_issue_77_async_generator_partial - RuntimeError: There is no current event loop in thread 'MainThread'.

According to https://docs.python.org/dev/whatsnew/3.14.html#id3

Removed implicit creation of event loop by asyncio.get_event_loop(). It now raises a RuntimeError if there is no current event loop. (Contributed by Kumar Aditya in gh-126353.)


https://docs.python.org/3.14/whatsnew/3.14.html

For the build logs, see:
https://copr-be.cloud.fedoraproject.org/results/@python/python3.14/fedora-rawhide-x86_64/08308752-python-makefun/

For all our attempts to build python-makefun with Python 3.14, see:
https://copr.fedorainfracloud.org/coprs/g/python/python3.14/package/python-makefun/

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 3.14:
https://copr.fedorainfracloud.org/coprs/g/python/python3.14/

Let us know here if you have any questions.

Python 3.14 is planned to be included in Fedora 43.
To make that update smoother, we're building Fedora packages with all pre-releases of Python 3.14.
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 Orion Poplawski 2024-11-30 21:11:04 UTC
Filed upstream.

Comment 2 Aoife Moloney 2025-02-26 13:18:05 UTC
This bug appears to have been reported against 'rawhide' during the Fedora Linux 42 development cycle.
Changing version to 42.

Comment 3 Karolina Surma 2025-06-11 16:00:20 UTC
*** Bug 2371970 has been marked as a duplicate of this bug. ***

Comment 4 Fedora Fails To Install 2025-06-12 09:39:20 UTC
Hello,

Please note that this comment was generated automatically by https://pagure.io/releng/blob/main/f/scripts/ftbfs-fti/follow-policy.py
If you feel that this output has mistakes, please open an issue at https://pagure.io/releng/

All subpackages of a package against which this bug was filled are now installable or removed from Fedora 43.

Thanks for taking care of it!