setup-uv incompatible with alpine

[yhu02]

Hi I'm trying to use this action in an alpine distro but I get the following error when trying to use the command after installing it.

__res_init: symbol not found

I've tried replicating it in my local environment and these are my findings.
Doing curl -LsSf https://astral.sh/uv/install.sh | sh works fine and shows the following

However, replicating the behaviour of the setup-uv action i.e. downloading directly from https://github.com/astral-sh/uv/releases/download/${UV_VERSION}/uv-x86_64-unknown-linux-gnu.tar.gz gives me the following

But, it seems that it is resolving to the wrong binary, i need the other one https://github.com/astral-sh/uv/releases/download/${UV_VERSION}/uv-x86_64-unknown-linux-musl.tar.gz

It seems like it always resolves to the gnu variant

setup-uv/src/utils/platforms.ts

Line 25 in f95cd87

linux: "unknown-linux-gnu",

Is it possible to enter an input parameter platform for the action?

[eifinger]

I assume you are running this inside a container?

[yhu02]

Yes, that is correct. We build our own images

I assume you are running this inside a container?

[eifinger]

Can you please try with uses: astral-sh/setup-uv@musl-support?
Please be aware that you have to make sure a python interpreter is already present (apk add python3), see also https://docs.astral.sh/uv/concepts/python-versions/#cpython-distributions and astral-sh/uv#6890

[eifinger]

@yhu02 feel free to reopen if your issue is not fixed