"stable" ABI?

[James-E-A]

I'm building a package, and I want to include a precompiled wheel for PyPy, but it's my understanding that py3-abi3-{tag.platform} wheels aren't supported by PyPy.

If my understanding's correct, and the so-called abi3 is actually CPython-specific, then I ask: what ABI should I target for PyPy?

I saw in this pretty old thread that the pypy73 ABI is suggested to be pretty stable. If I target that ABI, will I be able to create a "universal" wheel (per OS, obviously) that supports PyPy 3.10 7.3.X, and PyPy 3.9 7.3.X, and PyPy 3.8 7.3.X, etc?

If so, what should I tag that wheel as? pp3-pypy73-{tag.platform}? py3-pypy73-{tag.platform}? Something else?

[James-E-A]

If my understanding's incorrect, and PyPy is "actually supposed to" support ABI3 wheels, then I instead ask for suggestions on operating setuptools to build py3-abi3-* wheels that PyPy will recognize.

[mattip]

PyPy does not support the abi3 standard and cannot import abi3 wheels. See #3397 for discussions about this: the conclusion was we need our own stable standard. Issue #2617 explores the idea of having a shim to support the CPython C-API, but we would need to be very careful where the header files use macros.

Eventually we hope the HPy project will provide the answer for wheels that support any version and any implementation of python.

[James-E-A]

Thanks for the confirmation and the extra context.

So, for now, is pp3-pypy73-{tag.platform} the best target for PyPy? It's possible to build one wheel (per platform) that will work with PyPy3.8 through PyPy3.10?

[mattip]

It's possible to build one wheel (per platform) that will work with PyPy3.8 through PyPy3.10?

No. One wheel per platform + pypy version