{
  description = "Ninjabrain Bot - Minecraft speedrunning utility";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
    flake-utils.url = "github:numtide/flake-utils";
  };

  outputs = { self, nixpkgs, flake-utils }:
    flake-utils.lib.eachDefaultSystem (system:
      let
        pkgs = nixpkgs.legacyPackages.${system};
        
        ninjabrain-bot = pkgs.stdenv.mkDerivation {
          pname = "ninjabrain-bot";
          version = "1.5.1";

          src = pkgs.fetchurl {
            url = "https://github.com/Ninjabrain1/Ninjabrain-Bot/releases/download/1.5.1/Ninjabrain-Bot-1.5.1.jar";
            sha256 = "sha256-Rxu9A2EiTr69fLBUImRv+RLC2LmosawIDyDPIaRcrdw=";
          };

          dontUnpack = true;

          nativeBuildInputs = [ pkgs.makeWrapper ];

          installPhase = ''
            mkdir -p $out/bin $out/share/ninjabrain-bot
            cp $src $out/share/ninjabrain-bot/ninjabrain-bot.jar

            makeWrapper ${pkgs.jre8}/bin/java $out/bin/ninjabrain-bot \
              --add-flags "-Dawt.useSystemAAFontSettings=on" \
              --add-flags "-jar $out/share/ninjabrain-bot/ninjabrain-bot.jar" \
              --prefix LD_LIBRARY_PATH : ${pkgs.lib.makeLibraryPath [
                pkgs.libxkbcommon
                pkgs.xorg.libX11
                pkgs.xorg.libXt
              ]}
          '';

          meta = with pkgs.lib; {
            description = "Stronghold calculator for Minecraft speedrunning";
            homepage = "https://github.com/Ninjabrain1/Ninjabrain-Bot";
            license = licenses.mit;
            platforms = platforms.linux;
          };
        };
      in
      {
        packages.default = ninjabrain-bot;
        apps.default = {
          type = "app";
          program = "${ninjabrain-bot}/bin/ninjabrain-bot";
        };
      }
    );
}