{ pkgs ? import <nixpkgs> {}, ... }:


let
  cljdeps = pkgs.callPackage ./deps.nix {};
  classpath = cljdeps.makeClasspaths {};
  exec-name = "worther";
  main-class = "worther.core";
  manifest = pkgs.writeText "${exec-name}-MANIFEST.MF" ''
    Manifest-Version: 1.0
    Main-Class: ${main-class}

  '';

in pkgs.stdenv.mkDerivation {
  name = exec-name;

  nativeBuildInputs = with pkgs; [ jre makeWrapper ];

  buildInputs = map (x: x.paths) cljdeps.packages;

  src = ./src;

  phases = [ "unpackPhase" "buildPhase" "installPhase" ];

  buildPhase = ''
    mkdir classes
    java -cp .:${classpath} clojure.main -e "(compile '${main-class})"
    jar cmf ${manifest} out.jar -C classes worther
  '';

  installPhase = ''
    mkdir -p $out/bin
    mkdir -p $out/share/java
    cp out.jar $out/share/java/${exec-name}.jar
    makeWrapper ${pkgs.jdk}/bin/java $out/bin/${exec-name} \
      --add-flags "-cp ${classpath}:$out/share/java/${exec-name}.jar ${main-class}"
  '';
}