anchor.diff:  , libpthreadstubs, libxcb, libXdmcp, qtsvg, qttools, qtwebengine, qtx11extras, kwallet, openssl }:
   
   stdenv.mkDerivation rec {
  -  # Last qupvilla release is 2.1.2 so we add the .1 although it isn't actually a
  -  # release but it is basically 2.1.2 with the falkon name
  +  # KDE hasn't made a release of falkon yet so we just track git for now which is
  +  # based on the most recent release of qupzilla
  +  # This wip version is 2.1.99 so we add the .1
     name = "falkon-${version}.1";
  -  version = "2.1.2";
  +  version = "2.1.99";
   
     src = fetchFromGitHub {
       owner  = "KDE";
       repo   = "falkon";
  -    rev    = "eecaf2e9d6b572a7f7d2e6dc324e3d79b61c31db";
  -    sha256 = "01r5aw10jd0qz7xvad0cqzjbnsj7vwblh54wbq4x1m6xbkp6xcgy";
  +    rev    = "dd3c570c41b4b3d0ad17202b78bf14cf1ac56495";
  +    sha256 = "07d40cpckaprj74mr06k3mfriwb471bdmq60smls34y62ss55q9d";
     };
   
     preConfigure = ''
  
positive.code:     license     = licenses.gpl3;
      maintainers = with maintainers; [ peterhoeg ];
      platforms   = platforms.unix;
      broken      = true;
    };
  }
  
negative.code: 
    nativeBuildInputs = [ cmake extra-cmake-modules pkgconfig qmake qttools ];
  
    enableParallelBuilding = true;
  
    meta = with stdenv.lib; {
      description = "QtWebEngine based cross-platform web browser";
  