For some reason [sdist seems to be missing on PyPI starting from `2025.4.20`](https://pypi.org/project/pymatgen/2025.4.20/#files) (the [first version unpinned Python 3.13](https://github.com/materialsproject/pymatgen/pull/4365)) - [`actions/setup-python@v5` seems to support Python 3.13](https://github.com/actions/setup-python/tree/v5) - The most recent [`v2025.6.14` release log](https://github.com/materialsproject/pymatgen/actions/runs/15656487272/job/44108495724) has expired (90 days) so not sure the reason
For some reason sdist seems to be missing on PyPI starting from
2025.4.20(the first version unpinned Python 3.13)actions/setup-python@v5seems to support Python 3.13v2025.6.14release log has expired (90 days) so not sure the reason