Hello, I'd like to bring up the topic of binary wheel packages for armv7l. They have already been discussed before, for example in this issue: https://github.com/pyca/cryptography/issues/6286
Quoting reaperhulk's comment from the issue: > Getting armv7l in hosted CI isn't really possible at this time and armv7l > systems tend to be very low performance compared to their aarch64 brethren. > We won't ship wheels for platforms we don't directly test, so that's the > primary obstacle here. I develop a Python project which uses cryptography, and was revisiting the topic of building armv7l docker images that include cryptography. In the past I had resorted to using piwheels prebuilt wheels but looks like I managed to build it from source on GitHub Actions. Here's a quick summary on how it works: - My project is hosted on GitHub, and has a GHA workflow to automatically build and publish a docker docker image on every release - On GHA, you can build armv7l images by using docker buildx: https://github.com/docker/setup-buildx-action - But there's a bug in ... QEMU, if I understand correctly, which causes cryptography build to fail: https://github.com/rust-lang/cargo/issues/8719 - That bug is not fixed, but there is a workaround, which is even packaged up as a reusable GHA action: https://github.com/marketplace/actions/docker-on-tmpfs By using that workaround, I got cryptography to compile for armv7l with no errors. It took a long time to complete, but I'm not making releases often, so that's fine by me. For reference, here's my GHA workflow: https://github.com/healthchecks/healthchecks/blob/master/.github/workflows/publish_docker_image.yml I have no idea if it would be practical or feasible to integrate this technique in the cryptography build process (so an official wheel can be built), but I thought I would share this in case somebody is interested to investigate it. If there's no resources or interest to support this, I fully understand. Pēteris
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