Is manylinux_2_34_aarch64 supported?

[agarny]

As mentioned in #2129, I am currently using commit 9c75ea1 of cibuildwheel and it has been working great (so, yeah, can't wait for an official of cibuildwheel with that feature). However, now, I would like to use manylinux_2_34_aarch64 if possible. I set CIBW_MANYLINUX_AARCH64_IMAGE to manylinux_2_34 and, sure enough, cibuildwheel recognises, but still it fails to start the container. Here is the trace I am getting:

Starting container image quay.io/pypa/manylinux_2_34_aarch64:2024.11.24-1...
  
  info: This container will host the build for cp39-manylinux_aarch64, cp310-manylinux_aarch64, cp311-manylinux_aarch64, cp312-manylinux_aarch64, cp313-manylinux_aarch64...
  + docker version -f '{{json .}}'
  + docker image inspect quay.io/pypa/manylinux_2_34_aarch64:2024.11.24-1 --format '{{.Os}}/{{.Architecture}}'
  Error response from daemon: No such image: quay.io/pypa/manylinux_2_34_aarch64:2024.11.24-1
  2024.11.24-1: Pulling from pypa/manylinux_2_34_aarch64
  .
  .
  .
  Digest: sha256:3c57b18fd4fb264a3a03887085da7aa023f2db496[197](https://github.com/opencor/libopencor/actions/runs/12840653567/job/35809553831#step:4:203)3a0ec284f2f925b1b14d
  Status: Downloaded newer image for quay.io/pypa/manylinux_2_34_aarch64:2024.11.24-1
  0f9f3320f5a4eddb3c1f82a7a8952026f86529083f89a0d0fd4277109dc5afc6
      + /bin/true
  exec /usr/local/bin/manylinux-entrypoint: exec format error
  Error: The operation was canceled.

Any idea why this is happening? As you can tell, I am trying to build Python wheels for Linux ARM. I have seen that you guys say that it must be done through emulation, but this is not an option for me since I need at least glibc version 2.34.

So, am I missing something or doesn't cibuildwheel support manylinux_2_34_aarch64? If it doesn't, would it be worth supporting manylinux_X_XX_aarch64 rather than "forcing" people to use emulation that may, or not, work for them?

[henryiii]

You run the docker image through emulation. The glibc version doesn’t matter. Just add QEMU and the image will load. Or, better yet, use the new GHA Linux ARM runners that went public two days ago. That will be 10x+ faster. Then you don’t need to set up QEMU.

I think you are confusing emulation and cross compiling.

[agarny]

Oh, I hadn't realised that I had to run the aarch64 image through emulation! I have just tried it and it's now going through, albeit very slowly indeed!

Otherwise, thanks for telling me about GHA's Linux ARM runners (see here for reference). I hadn't seen that! I have just given it a try and it's all working very nicely and is, as expected, very fast!