{
# vim: set et,sw=4
  description = "Flake utils demo";

  inputs.flake-utils.url = "github:numtide/flake-utils";

  outputs = { self, nixpkgs, flake-utils }:
    flake-utils.lib.eachDefaultSystem (system:
      let pkgs = nixpkgs.legacyPackages.${system}; in
      {
        packages = rec {
          performous-composer = pkgs.libsForQt5.callPackage ./performous-composer.nix {};
          open-simh = pkgs.callPackage ./open-simh.nix {};
        };
        legacyPackages = rec {
          linux_6_5_3 = pkgs.callPackage ./linux_653.nix {
            kernelPatches = with pkgs.kernelPatches; [
              bridge_stp_helper 
              request_key_helper
            ];
          };
          linuxPackages_6_5_3 = pkgs.linuxPackagesFor linux_6_5_3;
        };
        apps = rec {
        };
      }
    );
}