{ ... }:
{
  perSystem =
    { pkgs, ... }:
    let
      dataFiles = pkgs.stdenv.mkDerivation {
        name = "name-generator-data";
        src = ./.;
        installPhase = ''
          mkdir -p $out
          cp adjectives.txt nouns.txt $out/
        '';
      };
    in
    {
      packages.name-generator =
        (pkgs.writeShellApplication {
          name = "name-generator";
          runtimeInputs = [ pkgs.bash ];
          text = ''
            # Data files location
            DATA_DIR="${dataFiles}"
            # Default separator
            SEPARATOR="-"
            # Parse command line options
            while [[ $# -gt 0 ]]; do
              case $1 in
                -s|--separator)
                  SEPARATOR="$2"
                  shift 2
                  ;;
                -h|--help)
                  echo "Usage: $0 [OPTIONS]"
                  echo "Generate a random name in the format: adjective-noun"
                  echo ""
                  echo "Options:"
                  echo "  -s, --separator CHAR    Use CHAR as separator (default: -)"
                  echo "  -h, --help             Show this help message"
                  exit 0
                  ;;
                *)
                  echo "Unknown option: $1"
                  exit 1
                  ;;
              esac
            done
            # Read adjectives and nouns
            mapfile -t ADJECTIVES < "$DATA_DIR/adjectives.txt"
            mapfile -t NOUNS < "$DATA_DIR/nouns.txt"
            # Select random adjective and noun
            ADJ_INDEX=$((RANDOM % ''${#ADJECTIVES[@]}))
            NOUN_INDEX=$((RANDOM % ''${#NOUNS[@]}))
            # Output the generated name
            echo "''${ADJECTIVES[$ADJ_INDEX]}''${SEPARATOR}''${NOUNS[$NOUN_INDEX]}"
          '';
        }).overrideAttrs
          { passthru.usage = builtins.readFile ./usage.kdl; };
    };
}