Wheels for aarch64 platform (AWS Graviton2 arm64)

[thiezn]

Hi,

Thanks for the great library! Would it be possible to add wheels for the aarch64 platform in future releases? I'm not 100% sure how difficult this would be, but it seems cibuildwheel does support the architecture.

The use case is that this will allow you to easily leverage the library on the new(ish) AWS Lambda Graviton2 architecture arm64. At the moment you have to jump through a few hoops to ensure you build the library for the proper platform.

Workaround

The current way to tackle this is to leverage AWS SAM cli using sam build --use-container. To build it properly from an AWS Lambda Layer you have to specify both the compatible architecture and the BuildArchitecture:

  LamdaLayer:
    Type: AWS::Serverless::LayerVersion
    Properties:
      LayerName: name-of-layer
      ContentUri: ./src/my-layer
      CompatibleRuntimes:
        - python3.9
      CompatibleArchitectures:
        - arm64
      Metadata:
        BuildMethod: makefile
        BuildArchitecture: arm64

Also check this stackoverflow issue.

[rushter]

Hi, I can add it but I don't have time to test it right now. So, a working PR would be appreciated.

[thiezn]

I had a look at the runners GitHub provides but unfortunately they are currently only on x86. The only option would be then to use a sef-hosted runner or wait for github.com to offer arm64/aarch64 runners in the future.

You can close the issue or leave it for future reference if preferred.

[rushter]

We already have builds for aarch64 using qemu. Not sure why they don't work on AWS.