root/nix/checks.nix


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{ inputs, self, ... }:
{
  perSystem =
    {
      lib,
      pkgs,
      system,
      ...
    }:
    let
      mkCheck =
        prefix: key: value:
        lib.attrsets.nameValuePair "${prefix}-${key}" value;
      devshells = lib.attrsets.mapAttrs' (mkCheck "devshell") self.devShells."${system}";
      packages = lib.attrsets.mapAttrs' (mkCheck "build") self.packages."${system}";

      nixos =
        let
          isCurrentSystem = _: conf: conf.pkgs.stdenv.hostPlatform.system == system;
          nixos = lib.attrsets.filterAttrs isCurrentSystem self.nixosConfigurations;
        in
        lib.attrsets.mapAttrs' (mkCheck "nixos") (
          lib.attrsets.mapAttrs (_: conf: conf.config.system.build.toplevel) nixos
        );
    in
    {
      checks =
        packages
        // nixos
        // devshells
        // {
          root-lint =
            let
              treefmt = pkgs.callPackage ./_treefmt.nix { treefmt-nix = inputs.treefmt-nix; };
            in
            pkgs.stdenvNoCC.mkDerivation {
              name = "root-lint";
              version = "0.0.1";

              src = lib.fileset.toSource {
                root = ../../.;
                fileset = lib.fileset.unions [
                  ../../flake.lock
                  ../../flake.nix
                  ../../README.md
                  ../../root
                ];
              };

              buildPhase = ''
                "${treefmt}/bin/treefmt" --ci
                touch "$out"
              '';
            };
        };
    };
}