anchor.diff:    buildPhase = ''
       for f in *.dsp;
       do
  +      echo "compiling standalone from" $f
         faust2jaqt -time -double -t 99999 $f
       done
   
  
positive.code: 
      for f in *.dsp;
      do
        faust2lv2  -time -double -gui -t 99999 $f
      done
    '';
  
negative.code: { stdenv, fetchFromGitHub, faust2jaqt, faust2lv2 }:
  stdenv.mkDerivation rec {
    name = "faustCompressors-v${version}";
    version = "1.2";
  
    src = fetchFromGitHub {
      owner = "magnetophon";
      repo = "faustCompressors";
      rev = "v${version}";
      sha256 = "144f6g17q4m50kxzdncsfzdyycdfprnpwdaxcwgxj4jky1xsha1d";
    };
  
    buildInputs = [ faust2jaqt faust2lv2 ];
  