{ stdenv, fetchFromGitHub, faust2jaqt, faust2lv2 }:
stdenv.mkDerivation rec {
  name = "RhythmDelay-${version}";
  version = "2.1";

  src = fetchFromGitHub {
    owner = "magnetophon";
    repo = "RhythmDelay";
    rev = "V${version}";
    sha256 = "1j0bjl9agz43dcrcrbiqd7fv7xsxgd65s4ahhv5pvcr729y0fxg4";
  };

  buildInputs = [ faust2jaqt faust2lv2 ];

  buildPhase = ''
    faust2jaqt -time -vec -t 99999 RhythmDelay.dsp
    sed -i "s|\[ *scale *: *log *\]||g ; s|\btgroup\b|hgroup|g" "RhythmDelay.dsp"
    faust2lv2  -time -vec -t 99999 -gui RhythmDelay.dsp
  '';

  installPhase = ''
    mkdir -p $out/bin
    cp RhythmDelay $out/bin/
    mkdir -p $out/lib/lv2
    cp -r RhythmDelay.lv2/ $out/lib/lv2
  '';

  meta = {
    description = "Tap a rhythm into your delay! For jack and lv2";
    homepage = https://github.com/magnetophon/RhythmDelay;
    license = stdenv.lib.licenses.gpl3;
    maintainers = [ stdenv.lib.maintainers.magnetophon ];
  };
}