anchor.diff:  }:
   stdenv.mkDerivation rec {
     pname = "ardour";
  -  version = "6.2";
  +  version = "6.3";
   
     # don't fetch releases from the GitHub mirror, they are broken
     src = fetchgit {
       url = "git://git.ardour.org/ardour/ardour.git";
       rev = version;
  -    sha256 = "17jxbqavricy01x4ymq6d302djsqfnv84m7dm4fd8cpka0dqjp1y";
  +    sha256 = "050p1adgyirr790a3xp878pq3axqwzcmrk3drgm9z6v753h0xhcd";
     };
   
     patches = [
  
positive.code:     fftw
      fftwSinglePrec
      flac
      fluidsynth
      glibmm
      gtkmm2
      hidapi
      itstool
      libarchive
      libjack2
      liblo
      libltc
      libogg
      libpulseaudio
      librdf_raptor
  
negative.code:     "--no-phone-home"
      "--optimize"
      "--ptformat"
      "--run-tests"
      "--test"
    ];
    # removed because it fixes https://tracker.ardour.org/view.php?id=8161 and https://tracker.ardour.org/view.php?id=8437
    # "--use-external-libs"
  
    # Ardour's wscript requires git revision and date to be available.
    # Since they are not, let's generate the file manually.
  