flake.nix

{
  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
    flake-parts.url = "github:hercules-ci/flake-parts";
    systems.url = "github:nix-systems/default";

    haskell-flake.url = "github:srid/haskell-flake";

    # Dev tools
    treefmt-nix.url = "github:numtide/treefmt-nix";
  };

  outputs = inputs:
    inputs.flake-parts.lib.mkFlake { inherit inputs; } {
      systems = import inputs.systems;
      imports = [
        inputs.treefmt-nix.flakeModule
        inputs.haskell-flake.flakeModule
        ./rust
        ./haskell
        ./nix/om.nix
      ];

      perSystem = { self', pkgs, config, ... }: {
        treefmt.config = {
          projectRootFile = "flake.nix";
          programs = {
            nixpkgs-fmt.enable = true;
            statix.enable = true;
            deadnix.enable = true;
          };
        };
        devShells.default = pkgs.mkShell {
          inputsFrom = [
            self'.devShells.haskell
            self'.devShells.rust
            config.treefmt.build.devShell
          ];
          shellHook = ''
            echo
            echo "🍎🍎 Run 'just <recipe>' to get started"
            just
          '';
        };
      };
    };
}