{
  description = "Learning Pulse";

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
  };

  outputs =
    { self
    , nixpkgs
    , maven
    , makeWrapper
    }:
    let
      javaVersion = 22;
      overlays = [
        (final: prev: rec {
          jdk = prev."jdk${toString javaVersion}";
          gradle = prev.gradle.override { java = jdk; };
          maven = prev.maven.override { inherit jdk; };
        })
      ];
      supportedSystems = [ "x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin" ];
      forEachSupportedSystem = f: nixpkgs.lib.genAttrs supportedSystems (system: f {
        pkgs = import nixpkgs { inherit overlays system; };
      });

    in
    {
      hydraJobs = {
        gateway = maven.buildMavenPackage rec {
          pname = "learningpulse-gateway";
          version = "1.2.1";

          src = ./gateway;

          mvnHash = "sha256-kLpjMj05uC94/5vGMwMlFzLKNFOKeyNvq/vmB6pHTAo=";

          nativeBuildInputs = [ makeWrapper ];

          installPhase = ''
            mkdir -p $out/bin $out/share/jd-cli
            install -Dm644 jd-cli/target/jd-cli.jar $out/share/jd-cli

            makeWrapper ${nixpkgs.pkgs.jre8}/bin/java $out/bin/jd-cli \
              --add-flags "-jar $out/share/jd-cli/jd-cli.jar"
          '';

          meta = with lib; {
            description = "The api gateway for learningpulse";
            homepage = "https://git.4o1x5.dev/learningpulse/server";
            license = licenses.gpl3Plus;
          };
        };
      };

      devShells = forEachSupportedSystem ({ pkgs }: {
        default = pkgs.mkShell {
          packages = with pkgs; [
            jdk
            maven
          ];
        };
      });
    };
}