Cache restore fails on self-hosted windows runners

[melund]

I stumbled on this problem with out self-hosted windows runners.

It doesn't cause the action to fail, so I only saw by chance.

It looks like the cache is downloading but tar fails when trying to extract it, reporting that the file is missing. I tried to look in the temp folder while the pipeline is running, and there is no cache.tgz file in the folder.

[pavelzw]

It seems like there is no gzip installed on your self-hosted windows runner. What happens when you install it?

I don't think that this issue is setup-pixi specific.
It will probably also occur if you use actions/cache@v3 directly; both setup-pixi and actions/cache use the Nodejs library @actions/cache internally.

[melund]

It seems like there is no gzip installed on your self-hosted windows runner. What happens when you install it?

Fair enough. It is true that gzip (MSYS2) wasn't installed. But neither is tar, and setup-pixi falls back to the version in "Git for Windows". GZip is in the same folder as the tar version it is using.
I agree that it is not nice to use tar and gzip bundled with Git. But pixi is already using one fallback.

It will probably also occur if you use actions/cache@v3

No. That seems to works fine :) May it works a bit differently