Rye uses indygreg's freethreaded builds

[Alexis-D]

e.g.

rye/rye/src/sources/generated/python_downloads.inc

Lines 104 to 108 in 7b8b101

	(PythonVersion { name: Cow::Borrowed("cpython"), arch: Cow::Borrowed("aarch64"), os: Cow::Borrowed("linux"), major: 3, minor: 13, patch: 0, suffix: None }, "https://github.com/indygreg/python-build-standalone/releases/download/20241016/cpython-3.13.0%2B20241016-aarch64-unknown-linux-gnu-freethreaded%2Blto-full.tar.zst", Some("59b50df9826475d24bb7eff781fa3949112b5e9c92adb29e96a09cdf1216d5bd")),
	(PythonVersion { name: Cow::Borrowed("cpython"), arch: Cow::Borrowed("aarch64"), os: Cow::Borrowed("macos"), major: 3, minor: 13, patch: 0, suffix: None }, "https://github.com/indygreg/python-build-standalone/releases/download/20241016/cpython-3.13.0%2B20241016-aarch64-apple-darwin-freethreaded%2Bpgo%2Blto-full.tar.zst", Some("efc2e71c0e05bc5bedb7a846e05f28dd26491b1744ded35ed82f8b49ccfa684b")),
	(PythonVersion { name: Cow::Borrowed("cpython"), arch: Cow::Borrowed("x86"), os: Cow::Borrowed("windows"), major: 3, minor: 13, patch: 0, suffix: None }, "https://github.com/indygreg/python-build-standalone/releases/download/20241016/cpython-3.13.0%2B20241016-i686-pc-windows-msvc-shared-pgo-full.tar.zst", Some("0ef249cb7ba1e2c451e0a551df063f9caf2e2dc37e09d89f780f98991cd433db")),
	(PythonVersion { name: Cow::Borrowed("cpython"), arch: Cow::Borrowed("x86_64"), os: Cow::Borrowed("linux"), major: 3, minor: 13, patch: 0, suffix: None }, "https://github.com/indygreg/python-build-standalone/releases/download/20241016/cpython-3.13.0%2B20241016-x86_64-unknown-linux-gnu-freethreaded%2Bpgo%2Blto-full.tar.zst", Some("a73adeda301ad843cce05f31a2d3e76222b656984535a7b87696a24a098b216c")),
	(PythonVersion { name: Cow::Borrowed("cpython"), arch: Cow::Borrowed("x86_64"), os: Cow::Borrowed("macos"), major: 3, minor: 13, patch: 0, suffix: None }, "https://github.com/indygreg/python-build-standalone/releases/download/20241016/cpython-3.13.0%2B20241016-x86_64-apple-darwin-freethreaded%2Bpgo%2Blto-full.tar.zst", Some("2e07dfea62fe2215738551a179c87dbed1cc79d1b3654f4d7559889a6d5ce4eb")),

It's unclear whether this was intended as this was introduced automatically by #1406. Per https://docs.python.org/3/whatsnew/3.13.html "support for running in a free-threaded mode" is "experimental".

Freethreaded CPython builds can cause issues e.g. pydantic/pydantic-core#1548 that don't happen with the regular builds.

Would it make sense to download non-freethreaded builds by default (and maybe let folks opt into freethreaded builds, e.g. by requesting a 3.13.0t build rather than a 3.13.0)?

[zanieb]

Yeah this seems like a mistake / bug.