anchor.diff:      libjack2
       libpulseaudio
       libsamplerate
  -    rtaudio
       rtmidi
       speex
  +    vcv-rtaudio
       zstd
     ];
   
  
positive.code:   fundamental-source = fetchFromGitHub {
      owner = "VCVRack";
      repo = "Fundamental";
      rev = "533397cdcad5c6401ebd3937d6c1663de2473627"; # tip of branch v2
      sha256 = "QnwOgrYxiCa/7t/u6F63Ks8C9E8k6T+hia4JZFhp1LI=";
    };
  in
  stdenv.mkDerivation rec {
    pname = "VCV-Rack";
    version = "2.0.6";
  
    desktopItems = [
      (makeDesktopItem {
  
negative.code:     substituteInPlace dep/osdialog/osdialog_zenity.c \
        --replace 'zenityBin[] = "zenity"' 'zenityBin[] = "${gnome.zenity}/bin/zenity"'
    '';
  
    nativeBuildInputs = [
      copyDesktopItems
  