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Case in point: "Using Alpine can make Python Docker builds 50× slower", https://pythonspeed.com/articles/alpine-docker-python/ https://pythonspeed.com/articles/

Case in point: "Using Alpine can make Python Docker builds 50× slower", https://pythonspeed.com/articles/alpine-docker-python/ https://pythonspeed.com/articles/alpine-docker-python/

williamjackson 6y ago
That article should be titled, “Most Python packages do not upload an Alpine-compatible wheel to PyPI.” If you know where to find Alpine-compatible wheels, or host your own, Alpine has no build-speed penalty.
- guitarbill 6y ago
  Where do you find Alpine-compatible wheels? Many ones uploaded to PyPI aren't, because e.g. both GitHub actions [0] and Azure pipelines [1] don't have Alpine images. Is it reasonable to expect maintainers of small, open-source libraries to write and maintain their own Alpine runners? I guess if you know your company's workflow depends on Alpine, you can build and cache them yourself. But the wider community doesn't benefit from that. [0] https://docs.github.com/en/actions/using-github-hosted-runners/about-github-hosted-runners#supported-runners-and-hardware-resources https://docs.github.com/en/actions/using-github-hosted-runne... [1] https://docs.microsoft.com/en-us/azure/devops/pipelines/agents/hosted?view=azure-devops&tabs=yaml#software https://docs.microsoft.com/en-us/azure/devops/pipelines/agen...
  - williamjackson 6y ago
    I was not aware of prior work so I maintain Alpine wheels for packages I use personally in a GitHub org. https://github.com/alpine-wheels/index https://github.com/alpine-wheels/index Besides my own needs, only one other person has requested additional packages, which I was happy to add. Maintenance is minimal, mostly just approving pull requests created by Dependabot.
    - guitarbill 6y ago
      That's pretty slick! Thanks
- di 6y ago
  Exactly zero packages upload Alpine-compatible wheels to PyPI. The manylinux specification assumes glibc, so there is no valid distribution format which would allow the publication of non-glibc wheels. However there is an in-progress PEP to support it: https://www.python.org/dev/peps/pep-0656/ https://www.python.org/dev/peps/pep-0656/
angrais 6y ago
I've used alpine images for python in production and not run into any of these issues. The key is to know how to use multistage builds to cache layers.

Case in point: "Using Alpine can make Python Docker builds 50× slower", https://pythonspeed.com/articles/alpine-docker-python/ https://pythonspeed.com/articles/alpine-docker-python/

williamjackson 6y ago

That article should be titled, “Most Python packages do not upload an Alpine-compatible wheel to PyPI.” If you know where to find Alpine-compatible wheels, or host your own, Alpine has no build-speed penalty.

guitarbill 6y ago
Where do you find Alpine-compatible wheels? Many ones uploaded to PyPI aren't, because e.g. both GitHub actions [0] and Azure pipelines [1] don't have Alpine images. Is it reasonable to expect maintainers of small, open-source libraries to write and maintain their own Alpine runners? I guess if you know your company's workflow depends on Alpine, you can build and cache them yourself. But the wider community doesn't benefit from that. [0] https://docs.github.com/en/actions/using-github-hosted-runners/about-github-hosted-runners#supported-runners-and-hardware-resources https://docs.github.com/en/actions/using-github-hosted-runne... [1] https://docs.microsoft.com/en-us/azure/devops/pipelines/agents/hosted?view=azure-devops&tabs=yaml#software https://docs.microsoft.com/en-us/azure/devops/pipelines/agen...
- williamjackson 6y ago
  I was not aware of prior work so I maintain Alpine wheels for packages I use personally in a GitHub org. https://github.com/alpine-wheels/index https://github.com/alpine-wheels/index Besides my own needs, only one other person has requested additional packages, which I was happy to add. Maintenance is minimal, mostly just approving pull requests created by Dependabot.
  - guitarbill 6y ago
    That's pretty slick! Thanks
di 6y ago
Exactly zero packages upload Alpine-compatible wheels to PyPI. The manylinux specification assumes glibc, so there is no valid distribution format which would allow the publication of non-glibc wheels. However there is an in-progress PEP to support it: https://www.python.org/dev/peps/pep-0656/ https://www.python.org/dev/peps/pep-0656/

angrais 6y ago

I've used alpine images for python in production and not run into any of these issues. The key is to know how to use multistage builds to cache layers.