Bug 2177817

Summary: portmidi fails to build with Python 3.12: error: PyThreadState {aka struct _ts} has no member named curexc_traceback
Product: [Fedora] Fedora Reporter: Tomáš Hrnčiar <thrnciar>
Component: portmidiAssignee: Michael J Gruber <mjg>
Status: CLOSED RAWHIDE QA Contact: Fedora Extras Quality Assurance <extras-qa>
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Version: rawhideCC: mhroncok, mjg, oget.fedora, thrnciar, xavier
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Last Closed: 2023-04-09 10:52:40 UTC Type: Bug
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Description Tomáš Hrnčiar 2023-03-13 16:20:21 UTC
portmidi fails to build with Python 3.12.0a6.

_pyportmidi.c: In function '__Pyx_Raise':
_pyportmidi.c:6950:34: error: 'PyThreadState' {aka 'struct _ts'} has no member named 'curexc_traceback'
 6950 |         PyObject* tmp_tb = tstate->curexc_traceback;
      |                                  ^~
_pyportmidi.c:6953:19: error: 'PyThreadState' {aka 'struct _ts'} has no member named 'curexc_traceback'
 6953 |             tstate->curexc_traceback = tb;
      |                   ^~

https://github.com/python/cpython/pull/101607
https://docs.python.org/3.12/whatsnew/3.12.html

For the build logs, see:
https://copr-be.cloud.fedoraproject.org/results/@python/python3.12/fedora-rawhide-x86_64/05624640-portmidi/

For all our attempts to build portmidi with Python 3.12, see:
https://copr.fedorainfracloud.org/coprs/g/python/python3.12/package/portmidi/

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 3.12:
https://copr.fedorainfracloud.org/coprs/g/python/python3.12/

Let us know here if you have any questions.

Python 3.12 is planned to be included in Fedora 39. To make that update smoother, we're building Fedora packages with all pre-releases of Python 3.12.
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 Tomáš Hrnčiar 2023-03-13 16:59:59 UTC
I've just realized the problem probably isn't in the package itself. It is not building because Cython is incompatible with the 6th alpha of Python 3.12.

Comment 2 Michael J Gruber 2023-03-14 09:21:51 UTC
(In reply to Tomáš Hrnčiar from comment #1)
> I've just realized the problem probably isn't in the package itself. It is
> not building because Cython is incompatible with the 6th alpha of Python
> 3.12.

Thanks for the early heads-up and for testing. Good work from the py team, as always :)

We may phase out this version of portmidi on Fedora 39, the new version has no python bindings ... Cython will be needed on Fedora 39 in any case.

The portmidi update is depending on some packaging advise. The thread on the devel-list was somewhat inconclusive.

Comment 3 Michael J Gruber 2023-04-09 10:52:40 UTC
Builds unchanged against the new Cython in copr.