python-orjson fails to build with Python 3.13.0a3. + /usr/bin/python3 -sP /usr/lib/rpm/redhat/import_all_modules.py -f /builddir/build/BUILD/python-orjson-3.9.12-3.fc40.x86_64-pyproject-modules Check import: orjson Traceback (most recent call last): File "/usr/lib/rpm/redhat/import_all_modules.py", line 171, in <module> main() ~~~~^^ File "/usr/lib/rpm/redhat/import_all_modules.py", line 167, in main import_modules(modules) ~~~~~~~~~~~~~~^^^^^^^^^ File "/usr/lib/rpm/redhat/import_all_modules.py", line 100, in import_modules importlib.import_module(module) ~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^ File "/usr/lib64/python3.13/importlib/__init__.py", line 88, in import_module return _bootstrap._gcd_import(name[level:], package, level) ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "<frozen importlib._bootstrap>", line 1387, in _gcd_import File "<frozen importlib._bootstrap>", line 1360, in _find_and_load File "<frozen importlib._bootstrap>", line 1331, in _find_and_load_unlocked File "<frozen importlib._bootstrap>", line 935, in _load_unlocked File "<frozen importlib._bootstrap_external>", line 1012, in exec_module File "<frozen importlib._bootstrap>", line 488, in _call_with_frames_removed File "/builddir/build/BUILDROOT/python-orjson-3.9.12-3.fc40.x86_64/usr/lib64/python3.13/site-packages/orjson/__init__.py", line 3, in <module> from .orjson import * ImportError: /builddir/build/BUILDROOT/python-orjson-3.9.12-3.fc40.x86_64/usr/lib64/python3.13/site-packages/orjson/orjson.cpython-313-x86_64-linux-gnu.so: undefined symbol: _PyDict_Next _PyDict is one of the many private C-APIs that have been removed from Python 3.13 (moved to internal): https://github.com/python/cpython/issues/106320 For the build logs, see: https://copr-be.cloud.fedoraproject.org/results/@python/python3.13/fedora-rawhide-x86_64/06989511-python-orjson/ For all our attempts to build python-orjson with Python 3.13, see: https://copr.fedorainfracloud.org/coprs/g/python/python3.13/package/python-orjson/ 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 3.13: https://copr.fedorainfracloud.org/coprs/g/python/python3.13/ Let us know here if you have any questions. Python 3.13 is planned to be included in Fedora 41. To make that update smoother, we're building Fedora packages with all pre-releases of Python 3.13. 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.
See also https://github.com/ijl/orjson/issues/177#issuecomment-962429954 Apparently, orjson uses private undocumented functions in CPython API, which has previously caused PyPy to not be supported.
The fix is in https://github.com/ijl/orjson/commit/323a930c3b7e0d6838303a661e6f1c086f860d0e
I suspect a proper fix for Python 3.13 will require a new version of PyO3 to adapt to the C API changes.
(In reply to Fabio Valentini from comment #3) > I suspect a proper fix for Python 3.13 will require a new version of PyO3 to > adapt to the C API changes. The package has built for Python 3.13 without any downstream workarounds since 3.9.13, so I’m going to close this bug even if there are still things that could be fixed or improved upstream.