Wheel support for linux aarch64

[odidev]

Summary
Installing gensim on aarch64 via pip using command "pip3 install gensim" tries to build wheel from source code.

Problem description
gensim doesn't have wheel for aarch64 on PyPI repository. So, while installing gensim via pip on aarch64, pip builds wheel for same resulting in it takes more time to install gensim. Making wheel available for aarch64 will benefit aarch64 users by minimizing gensim installation time.

Expected Output
Pip should be able to download gensim wheel from PyPI repository rather than building it from source code.

@gensim-team, please let me know if I can help you building wheel/uploading to PyPI repository. I am curious to make gensim wheel available for aarch64. It will be a great opportunity for me to work with you.

[piskvorky]

Sure, that'd be great. The main obstacle is that none of us work with that platform, and building wheels reliably and automatically (as part of CI) is tricky.

If you're up for it, please study https://github.com/RaRe-Technologies/gensim/wiki/Developer-page and let us know if you think adding wheels for aarch64 is possible.

[gojomo]

But the pip install still works, just a little slower, right?

I would suggest that we only add support for a new architecture if our existing CI machines can auto-build it. (And, if Gensim's actual PyPI packages/wheels aren't being collected directly from CI machines for upload to PyPI, that would also be a good step in the direction of reliability/assurance/reproducibility of builds.)

[piskvorky]

Of course, manual builds are out of the question.

[nikaro]

It looks like people uses qemu and cibuildwheel for that (cf. example).