Feature or enhancement

Proposal:

In hashlib.h, we have a HASHLIB_GIL_MINSIZE constant that we could expose as hashlib.GIL_MINSIZE. For now it's a read-only constant since the constant is shared across multiple modules (_hashlib and HACL*-based primitives).

Since _hashlib may be missing but _md5 may not, it's better to place that constant in all modules. However, for it to be read-only, we should make it available in all modules it is shared by. That way, we can always have access to it for desired module and we can also change its per-module behavior in the future.

Note: this is typically useful in tests where for now it's always hardcoded.

Has this already been discussed elsewhere?

This is a minor feature, which does not need previous discussion elsewhere

Links to previous discussion of this feature:

No response

Linked PRs

• gh-132993: expose HASHLIB_GIL_MINSIZE to private extension modules #132999