bdist limitation

[kcpevey]

@mattip Is there a reason why we have bdist limited to 3.6 in setup.cfg

[bdist_wheel]
py-limited-api = cp36

[mattip]

If we remove this requirement, we need to create a wheel for each version of python we wish to support. Since we do not use much of the python C-API, we can create a stable API binary package (see PEP 384). That is done using this definition. The wheel name should be something like fast_numpy_loops-0.0.0-cp36-abi3-linux_x86_64.whl, where the cp36-abi3 means this wheel can be installed on any python >=3.6 (it still needs to be used on linux_x6_64. After processing with auditwheel, if built in a proper manylinux docker, it can use the fast_numpy_loops-0.0.0-cp36-abi3-manylinux1.whl name). The dll inside the package is called _fast_numpy_loops.abi3.so, which also indicates it uses the stable API.

[mattip]

We define the Py_LIMITED_API macro as well

[kcpevey]

Ok. I didn't understand the naming convention. So if we include the above setup, then we build using py 3.8, it will build a wheel compatible for 3.6, 3.7 and 3.8?

[mattip]

Assuming cibuildwheel supports that, yes

[mattip]

And 3.9, 3.10, ...

[mattip]

Xref pypa/cibuildwheel#78

[mattip]

Closing, the question was answered.