flake inputs

[blaggacao]

It seems currently not documented (nor ergonomic) to fetch flake in config.inputs.

I'd propose a new argument: fetchFlakeInput which shells out to flake.lock to get the relevant info:

# makes.nix
{
  inputs = {
    cardano-node = fetchFlakeInput "cardano-node";
  };
}

[blaggacao]

This can be a trampoline to substitute makes.lock.nix and other hard coded inputs in the case a flake.lock file is detected and the corresponding "magic" input is present. — all without using any nix3 functionality on the end-user side.

[blaggacao]

Maybe we can rather implement this in the inputs option itself so that it gets auto-populated with flake.lock inputs if that file is present... 🤔 (with an option to make it explicit and self documenting adoptFlakeInputs = true; (false by default).

[blaggacao]

I think I'll iterate on this one, for now.

[blaggacao]

closed via #561