{ inputs, ... }: {
  imports = [
    inputs.devshell.flakeModule
    inputs.treefmt-nix.flakeModule
    inputs.pre-commit-hooks.flakeModule
  ];

  perSystem =
    { config
    , pkgs
    , ...
    }: {
      devshells.default = {
        name = "world";

        packages = with pkgs; [
          (config.treefmt.build.wrapper)
        ];

        devshell.startup = {
          pre-commit.text = config.pre-commit.installationScript;
        };

        commands = [
          { package = config.treefmt.build.wrapper; }
          {
            name = "update";
            help = "Update + Commit the Lock File";
            command = "nix flake update --commit-lock-file";
            category = "nix";
          }
          {
            name = "build-darwin";
            category = "darwin";
            help = "Build the current darwin configuration";
            command = "darwin-rebuild build --flake .#";
          }
          {
            name = "switch-darwin";
            category = "darwin";
            help = "Switch to the current darwin configuration";
            command = "darwin-rebuild switch --flake .#";
          }
        ];
      };

      treefmt = {
        projectRootFile = ".git/config";

        # list of supported programs
        # https://github.com/numtide/treefmt-nix
        programs = {
          nixpkgs-fmt.enable = true;
          shfmt.enable = true;
          shellcheck.enable = true;
          yamlfmt.enable = true;
          taplo.enable = true;
        };
      };

      pre-commit = {
        settings = {
          hooks = {
            deadnix.enable = true;
            treefmt.enable = true;
          };
        };
      };
    };
}