anchor.diff:  
     preConfigure = "./bootstrap.sh";
   
  +  nativeBuildInputs = [ pkgconfig autoreconfHook gettext ];
     buildInputs = [
  -    ETL boost cairo gettext glibmm gtk3 gtkmm3 imagemagick intltool
  -    libjack2 libsigcxx libxmlxx makeWrapper mlt-qt5 pkgconfig
  -    synfig autoreconfHook which defaultIconTheme
  +    ETL boost cairo glibmm gtk3 gtkmm3 imagemagick intltool
  +    libjack2 libsigcxx libxmlxx makeWrapper mlt-qt5
  +    synfig which defaultIconTheme
     ];
   
     postInstall = ''
  
positive.code:       "--with-boost-libdir=${boost.out}/lib"
      ];
  
      buildInputs = [
        ETL boost cairo gettext glibmm mlt-qt5 libsigcxx libxmlxx pango
        pkgconfig autoreconfHook
      ];
    };
  in
  
negative.code: 
      postUnpack = "sourceRoot=\${sourceRoot}/ETL/";
  
      nativeBuildInputs = [ autoreconfHook ];
    };
  
    synfig = stdenv.mkDerivation rec {
  