anchor.diff:    postPatch = ''
       substituteInPlace dfasma.pro --replace '$$DFASMAVERSIONGITPRO' '${version}'
       cp -Rv "${reaperFork.src}"/* external/REAPER
  +    cp -Rv "${libqaudioextra.src}"/* external/libqaudioextra
     '';
   
     configurePhase = ''
  
positive.code: 
  let
  
    version = "1.2.4";
    rev = "v${version}";
    sha256 = "1mccfs5dgmfqxa7wvvz2j3qdifh0kxwzcz8bb3pdwv3phrf8lvji";
  
    reaperFork = {
      src = fetchFromGitHub {
  
negative.code:     };
      meta = with stdenv.lib; {
       license = licenses.asl20;
      };
    };
  
    libqaudioextra = {
      src = fetchFromGitHub {
        sha256 = "17pvlij8cc4lwzf6f1cnygj3m3ci6xfa3lv5bgcr5i1gzyjxqpq1";
        rev = "b7d187cd9a1fd76ea94151e2e02453508d0151d3";
        repo = "libqaudioextra";
        owner = "gillesdegottex";
      };
      meta = with stdenv.lib; {
       license = licenses.gpl3Plus;
      };
    };
  
  