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Is free threaded Python 3.14 supported? #1162

@DimitriPapadopoulos

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@DimitriPapadopoulos

Currently, README.md refers to free-threaded Python 3.13 only:

- Supports [free-threaded Python 3.13](https://py-free-threading.github.io).

CFFI supports only free threaded Python 14. From its v2.0.0 change log:

Added support for free threaded CPython (3.14t+ only). [...] CPython 3.13t is not currently supported due to differences in sync primitive behavior from 3.14t that result in segfaults.

Lack of support for 3.14t in scikit-build-core would make the two packages incompatible.

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