Publish linux arm64 wheels

[mark-thm]

We'd like to use bottleneck on Linux arm64 machines and it'd be great to consume a wheel instead of an sdist for that.

Following the guide at https://cibuildwheel.pypa.io/en/stable/faq/#emulation, cibuildwheel supports QEMU emulation to make the arm64 build work.

[rdbisme]

Thanks.

I'm reasonably convinced this still needs to be fixed: #394

[mark-thm]

Oh, interesting -- I'm able to successfully install (and thus build) from sdist on Ubuntu 22.04 running on an arm64 machine.

[rdbisme]

Ok! Any chance you might contribute also in the tests section of the CI? That will allow us to be sure it works. I'm not 100% sure on how to do that, I hope Github actions has Arm64 runners.

[mark-thm]

Running some experiments on another repo about getting Python tests running on arm64 Linux runners but not having much success. GitHub is not yet supporting Linux/arm64 runners for OSS projects, so I’m not able to do this natively.

I’m confident in the cibuildwheel support (just followed their docs).

Some ideas here:

• run the cibuildwheel build minus the publishing component in CI (don’t think this will run your tests but it will show that the library successfully builds)
• run the tests in a qemu emulated docker container
• don’t modify the test portion

[groodt]

GitHub hopefully will have Arm64 for OSS by end of year. https://github.blog/news-insights/product-news/arm64-on-github-actions-powering-faster-more-efficient-build-systems/

So hopefully that holds true.

[ollie-bell]

Just chiming in to say thanks for doing this and do let me know if any additional help is needed!

Fixing this issue will simplify a Dockerfile for our dev's working on macOS arm64 locally :D Docker therefore is running locally on linux/arm64 and no wheel exists for bottleneck there.