[arximboldi]

I like Github Actions and it is better than what I used before (Travis) and I think it solves an important problem. For OSS projects it's a super valuable free resource.

For me what worked wonders was adopting Nix. Make sure you have a reproducible dev environment and wrap your commands in `nix-shell --run`, or even better `nix develop --command`, or even better your most of your CI tasks derivations that run with `nix build` or `nix flake check`.

Not only does this make it super easy to work with Github Actions, also with your colleagues or other contributors.

[anttiharju]

Second the Nix approach. One can even build a github actions-compatible container out of a flake and have actions run in it. I have done so for my personal projects https://github.com/anttiharju/compare-changes

[dfee]

isn't this better served with something like Bazel (behind Nix of course?)