{ lib, stdenv, fetchurl, makeWrapper, jre_headless, gawk }:

stdenv.mkDerivation rec {
  pname = "ftb-app";
  version = "202208131844";

#  src = fetchurl {
#    url = "https://apps.modpacks.ch/FTBApp/release/202208131844-e5790011d3-release/FTBA_unix_202208131844-e5790011d3-release.sh";
#    sha256 = "afe8a2a81b5f0597ef6a3bc858ff67b8212ebe5f0fd414471ef10d152921b964";
#  };

  preferLocalBuild = true;

  sourceRoot = "${pname}-${version}";

  nativeBuildInputs = [ makeWrapper ];

#  patches = [ ./nexus-bin.patch ./nexus-vm-opts.patch ];

#  postPatch = ''
#    substituteInPlace bin/nexus.vmoptions \
#      --replace etc/karaf $out/etc/karaf \
#      --replace =. =$out
#  '';

  installPhase = ''
    runHook preInstall
    mkdir -p $out
    wget https://apps.modpacks.ch/FTBApp/release/202208131844-e5790011d3-release/FTBA_unix_202208131844-e5790011d3-release.sh -O $out/ftba.sh
#    cp FTBA_unix_*.sh $out/fbta.sh
#    cp -rfv * .install4j $out
#    rm -fv $out/bin/nexus.bat
    wrapProgram $out/ftba.sh \
      --set JAVA_HOME ${jre_headless} \
      --set ALTERNATIVE_NAME "ftba" \
      --prefix PATH "${lib.makeBinPath [ gawk ]}"
    runHook postInstall
  '';

  meta = with lib; {
    description = "Minecraft Feed The Beast App for playing modded Minecraft.";
    homepage = "https://www.feed-the-beast.com/app";
    sourceProvenance = with sourceTypes; [ binaryBytecode ];
#    license = licenses.epl10;
    platforms = platforms.all;
    maintainers = with maintainers; [ seanomik ];
  };
}