anchor.diff:    };
   
     nativeBuildInputs = [ pkgconfig python makeWrapper ];
  -  buildInputs = [ gcc
  -    python
  -
  -    libsamplerate libsndfile readline
  -
  +  buildInputs = [ python libsamplerate libsndfile readline
       optDbus optPythonDBus optLibffado optAlsaLib optLibopus
     ];
   
  
positive.code:     substituteInPlace svnversion_regenerate.sh --replace /bin/bash ${bash}/bin/bash
    '';
  
    patches = [ ./jack-gcc5.patch ];
  
    configurePhase = ''
      python waf configure --prefix=$out \
  
negative.code: { stdenv, fetchFromGitHub, fetchpatch, pkgconfig, python2Packages, makeWrapper
  , bash, libsamplerate, libsndfile, readline
  
  # Optional Dependencies
  , dbus ? null, libffado ? null, alsaLib ? null
  