Consider musl builds

[mitsuhiko]

It might be worthwhile to consider picking musl builds instead of glibc builds for platforms without glibc to address #30. The builds themselves are available but currently not considered by rye.

[mitsuhiko]

Relates to #163

[rdbo]

Possible solution for musl libc:

• Add new OS string for musl Linux on the downloads.inc, e.g linux_musl. It will detect whether the OS is musl libc or GNU libc, and use the appropriate URLs for each
• Prioritize musl downloads over glibc. This method will download musl builds when available; if they are not available, use GNU libc. This has the downside that while using a musl Linux, you might believe that the other Linux downloads work here as well, but they don't (e.g PyPy's binary Linux builds only support glibc, as of now)

I'm taking a look at this issue further, hoping to help out with it

[rdbo]

There's also the option for adding a toolchain string in the Python versions. E.g:

• linux-gnu-x86_64
• linux-musl-x86_64
• win32-msvc-aarch64
  I don't think it's worth it though, since AFAIK there's only one edge case for now, which is musl

[jelacious]

Ran into this yesterday while trying to set-up an Alpine Linux Docker image for CI purposes. Even despite using the locally installed toolchain rye will still complain about incompatible versions. I'll provide the Dockerfile I am playing with for reference:

FROM "alpine:latest"
ENV HOME="/root"
WORKDIR $HOME

RUN apk add -U --no-cache \
        git \
        libffi \
        libffi-dev \
        python3 \
        py3-virtualenv \
        openssl \
        openssl-dev \
        build-base \
        perl \
        pkgconfig \
        curl \
        cmake

RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- --default-toolchain stable --profile minimal --component clippy -y
ENV PATH="$HOME/.cargo/bin:${PATH}"
RUN cargo install --git https://github.com/astral-sh/rye rye --locked
RUN rye toolchain register "/usr/bin/python"
RUN rye tools install pytest

And the result of running docker build . is:

 => ERROR [7/7] RUN rye tools install pytest                                                                                                                                             1.5s
------                                                                                                                                                                                        
 > [7/7] RUN rye tools install pytest:                                                                                                                                                        
0.283 Bootstrapping rye internals
1.502 Found a compatible Python version: [email protected]
1.527 error: unable to create self venv using /usr/bin/python3.11. It might be that the used Python build is incompatible with this machine. For more information see https://rye-up.com/guide/installation/
1.527 
1.527 Caused by:
1.527     No such file or directory (os error 2)
------
Dockerfile:23
--------------------
  21 |     RUN cargo install --git https://github.com/astral-sh/rye rye --locked
  22 |     RUN rye toolchain register "/usr/bin/python"
  23 | >>> RUN rye tools install pytest
  24 |     
  25 |     
--------------------
ERROR: failed to solve: process "/bin/sh -c rye tools install pytest" did not complete successfully: exit code: 1

Same happens if I try doing rye self install -y.