py311-pyyaml-ft

YAML parser and emitter for Python with support for free-threading

PyYAML-ft provides a full-featured YAML processing framework for Python with support for free-threading. PEP 703 introduced free-threaded Python as a separate build of CPython 3.13. Thread-safety issues that might have otherwise gone unnoticed are now much easier to trigger because of the absence of protection from the GIL. Also, because the free-threaded build is ABI-incompatible, extension modules need to be separate, free-threaded wheels and declare support for it. The PyYAML maintainers decided to not port PyYAML to the free-threaded build before the latter, along with Cython support for it, has been tested more extensively in real-world applications. Our rationale with this fork is to implement support for the free-threaded build, so that PyYAML can be tested with it by its users, even before the port is merged upstream.