Question about CI and third-party binary caches.

[vic]

Hi, I've recently contributed support for the gleam language #602. However, looking at the CI logs it looks like running the gleam example is taking most of the CI time because it has to build gleam and all its rust dependencies from source.

So, I'm thinking of creating a cachix gleam-nix cache and adding a cachix action to the gleam-nix repo, so people and CI can benefit from already built binaries. Now my question is: Suppose I push to this gleam-nix cache from the gleam-nix CI, how could we instruct devenv CI to use that cache, is that possible ?

Any advice is more than appreciated, @domenkozar

[vic]

From the devenv-user perspective, I guess it's ok to expect they have to do cachix use gleam-nix, my question is more about devenv's CI perspective.

[vic]

What if we could add a trusted substituter via examples/gleam/devenv.yaml, is that already posible? or only via a flake.nix nixConfig.