Cython fails to build with Python 3.12.0a5. /builddir/build/BUILD/cython-0.29.33/Cython/Plex/Scanners.c:2985:5: warning: ‘ma_version_tag’ is deprecated [-Wdeprecated-declarations] 2985 | __Pyx_GetModuleGlobalName(__pyx_t_6, __pyx_n_s_Errors); if (unlikely(!__pyx_t_6)) __PYX_ERR(0, 158, __pyx_L1_error) | ^~~~~~~~~~~~~~~~~~~~~~~~~ In file included from /usr/include/python3.12/dictobject.h:90, from /usr/include/python3.12/Python.h:61, from /builddir/build/BUILD/cython-0.29.33/Cython/Plex/Scanners.c:21: /usr/include/python3.12/cpython/dictobject.h:22:34: note: declared here 22 | Py_DEPRECATED(3.12) uint64_t ma_version_tag; | ^~~~~~~~~~~~~~ /builddir/build/BUILD/cython-0.29.33/Cython/Plex/Scanners.c: In function ‘__Pyx_get_tp_dict_version’: /builddir/build/BUILD/cython-0.29.33/Cython/Plex/Scanners.c:8339:5: warning: ‘ma_version_tag’ is deprecated [-Wdeprecated-declarations] 8339 | return likely(dict) ? __PYX_GET_DICT_VERSION(dict) : 0; | ^~~~~~ /usr/include/python3.12/cpython/dictobject.h:22:34: note: declared here 22 | Py_DEPRECATED(3.12) uint64_t ma_version_tag; | ^~~~~~~~~~~~~~ /builddir/build/BUILD/cython-0.29.33/Cython/Plex/Scanners.c: In function ‘__Pyx_get_object_dict_version’: /builddir/build/BUILD/cython-0.29.33/Cython/Plex/Scanners.c:8351:5: warning: ‘ma_version_tag’ is deprecated [-Wdeprecated-declarations] 8351 | return (dictptr && *dictptr) ? __PYX_GET_DICT_VERSION(*dictptr) : 0; | ^~~~~~ /usr/include/python3.12/cpython/dictobject.h:22:34: note: declared here 22 | Py_DEPRECATED(3.12) uint64_t ma_version_tag; | ^~~~~~~~~~~~~~ /builddir/build/BUILD/cython-0.29.33/Cython/Plex/Scanners.c: In function ‘__Pyx_object_dict_version_matches’: /builddir/build/BUILD/cython-0.29.33/Cython/Plex/Scanners.c:8355:5: warning: ‘ma_version_tag’ is deprecated [-Wdeprecated-declarations] 8355 | if (unlikely(!dict) || unlikely(tp_dict_version != __PYX_GET_DICT_VERSION(dict))) | ^~ /usr/include/python3.12/cpython/dictobject.h:22:34: note: declared here 22 | Py_DEPRECATED(3.12) uint64_t ma_version_tag; | ^~~~~~~~~~~~~~ /builddir/build/BUILD/cython-0.29.33/Cython/Plex/Scanners.c: In function ‘__Pyx__GetModuleGlobalName’: /builddir/build/BUILD/cython-0.29.33/Cython/Plex/Scanners.c:8705:5: warning: ‘ma_version_tag’ is deprecated [-Wdeprecated-declarations] 8705 | __PYX_UPDATE_DICT_CACHE(__pyx_d, result, *dict_cached_value, *dict_version) | ^~~~~~~~~~~~~~~~~~~~~~~ /usr/include/python3.12/cpython/dictobject.h:22:34: note: declared here 22 | Py_DEPRECATED(3.12) uint64_t ma_version_tag; | ^~~~~~~~~~~~~~ /builddir/build/BUILD/cython-0.29.33/Cython/Plex/Scanners.c: In function ‘__Pyx_CLineForTraceback’: /builddir/build/BUILD/cython-0.29.33/Cython/Plex/Scanners.c:10207:9: warning: ‘ma_version_tag’ is deprecated [-Wdeprecated-declarations] 10207 | __PYX_PY_DICT_LOOKUP_IF_MODIFIED( | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /usr/include/python3.12/cpython/dictobject.h:22:34: note: declared here 22 | Py_DEPRECATED(3.12) uint64_t ma_version_tag; | ^~~~~~~~~~~~~~ /builddir/build/BUILD/cython-0.29.33/Cython/Plex/Scanners.c:10207:9: warning: ‘ma_version_tag’ is deprecated [-Wdeprecated-declarations] 10207 | __PYX_PY_DICT_LOOKUP_IF_MODIFIED( | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /usr/include/python3.12/cpython/dictobject.h:22:34: note: declared here 22 | Py_DEPRECATED(3.12) uint64_t ma_version_tag; | ^~~~~~~~~~~~~~ /builddir/build/BUILD/cython-0.29.33/Cython/Plex/Scanners.c: In function ‘__Pyx_PyInt_As_long’: /builddir/build/BUILD/cython-0.29.33/Cython/Plex/Scanners.c:10651:53: error: ‘PyLongObject’ {aka ‘struct _longobject’} has no member named ‘ob_digit’ 10651 | const digit* digits = ((PyLongObject*)x)->ob_digit; | ^~ /builddir/build/BUILD/cython-0.29.33/Cython/Plex/Scanners.c:10706:53: error: ‘PyLongObject’ {aka ‘struct _longobject’} has no member named ‘ob_digit’ 10706 | const digit* digits = ((PyLongObject*)x)->ob_digit; | ^~ /builddir/build/BUILD/cython-0.29.33/Cython/Plex/Scanners.c: In function ‘__Pyx_PyInt_As_int’: /builddir/build/BUILD/cython-0.29.33/Cython/Plex/Scanners.c:10847:53: error: ‘PyLongObject’ {aka ‘struct _longobject’} has no member named ‘ob_digit’ 10847 | const digit* digits = ((PyLongObject*)x)->ob_digit; | ^~ /builddir/build/BUILD/cython-0.29.33/Cython/Plex/Scanners.c:10902:53: error: ‘PyLongObject’ {aka ‘struct _longobject’} has no member named ‘ob_digit’ 10902 | const digit* digits = ((PyLongObject*)x)->ob_digit; | ^~ /builddir/build/BUILD/cython-0.29.33/Cython/Plex/Scanners.c: In function ‘__Pyx_PyIndex_AsSsize_t’: /builddir/build/BUILD/cython-0.29.33/Cython/Plex/Scanners.c:11353:45: error: ‘PyLongObject’ {aka ‘struct _longobject’} has no member named ‘ob_digit’ 11353 | const digit* digits = ((PyLongObject*)b)->ob_digit; | ^~ 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_64/05538359-Cython/ For all our attempts to build Cython with Python 3.12, see: https://copr.fedorainfracloud.org/coprs/g/python/python3.12/package/Cython/ 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.
This problem is already fixed in Cython's 3.0.0 master branch. But upstream hasn't backported it to 0.29.x branch yet. https://github.com/cython/cython/issues/5238#issuecomment-1431349376 I wonder if it's worth patching 0.29.x or if it's better to spend the resources on packaging Cython 3.0.0 into Fedora and testing its impact as we discussed wrt bug 1823181. The question is how dangerous it would be to use Cython 3.0.0 for Python 3.12 mass rebuild. @mhroncok WDYT?
Feel free to temporarily use Cython 3 in the Python 3.12 copr, as copr is a playground where we can easily revert such things. For a real Fedora update, I'd rather not intermingle the Cython 3 effort with the Python 3.12 effort in case one of them turns out to block the other. If a backport is at all possible, we should attempt it.
https://src.fedoraproject.org/rpms/Cython/pull-request/42
FEDORA-2023-d14b68654f has been submitted as an update to Fedora 39. https://bodhi.fedoraproject.org/updates/FEDORA-2023-d14b68654f
FEDORA-2023-d14b68654f has been pushed to the Fedora 39 stable repository. If problem still persists, please make note of it in this bug report.