{ stdenv, fetchurl, makeDesktopItem, makeWrapper, patchelf, p7zip
, coreutils, gnugrep, which, git, python, unzip }:

{ name, product, version, build, src, wmClass, jdk, meta } @ attrs:

with stdenv.lib;

let loName = toLower product;
    hiName = toUpper product;
    execName = concatStringsSep "-" (init (splitString "-" name));
in

with stdenv; lib.makeOverridable mkDerivation rec {
  inherit name build src meta;
  desktopItem = makeDesktopItem {
    name = execName;
    exec = execName;
    comment = lib.replaceChars ["\n"] [" "] meta.longDescription;
    desktopName = product;
    genericName = meta.description;
    categories = "Application;Development;";
    icon = execName;
    extraEntries = ''
      StartupWMClass=${wmClass}
    '';
  };

  buildInputs = [ makeWrapper patchelf p7zip unzip ];

  patchPhase = ''
      get_file_size() {
        local fname="$1"
        echo $(ls -l $fname | cut -d ' ' -f5)
      }

      munge_size_hack() {
        local fname="$1"
        local size="$2"
        strip $fname
        truncate --size=$size $fname
      }

      interpreter=$(echo ${stdenv.glibc.out}/lib/ld-linux*.so.2)
      if [ "${stdenv.system}" == "x86_64-linux" ]; then
        target_size=$(get_file_size bin/fsnotifier64)
        patchelf --set-interpreter "$interpreter" bin/fsnotifier64
        munge_size_hack bin/fsnotifier64 $target_size
      else
        target_size=$(get_file_size bin/fsnotifier)
        patchelf --set-interpreter "$interpreter" bin/fsnotifier
        munge_size_hack bin/fsnotifier $target_size
      fi
  '';

  installPhase = ''
    mkdir -p $out/{bin,$name,share/pixmaps,libexec/${name}}
    cp -a . $out/$name
    ln -s $out/$name/bin/${loName}.png $out/share/pixmaps/${execName}.png
    mv bin/fsnotifier* $out/libexec/${name}/.

    jdk=${jdk.home}
    item=${desktopItem}

    makeWrapper "$out/$name/bin/${loName}.sh" "$out/bin/${execName}" \
      --prefix PATH : "$out/libexec/${name}:${jdk}/bin:${coreutils}/bin:${gnugrep}/bin:${which}/bin:${git}/bin" \
      --set JDK_HOME "$jdk" \
      --set ${hiName}_JDK "$jdk" \
      --set ANDROID_JAVA_HOME "$jdk" \
      --set JAVA_HOME "$jdk"

    ln -s "$item/share/applications" $out/share
  '';

}