anchor.diff:  , vala
   , gettext
   , perl
  +, python3
   , gnome
   , gdk-pixbuf
   , zlib
  
positive.code:     vala
      gettext
      perl # for pod2man
    ];
  
    buildInputs = [
  
negative.code: 
  stdenv.mkDerivation rec {
    pname = "gtk-vnc";
    version = "1.3.0";
  
    outputs = [ "out" "bin" "man" "dev" ];
  
    src = fetchurl {
      url = "mirror://gnome/sources/${pname}/${lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
      sha256 = "X6qlgjuMvowLC6HkVsTnDEsa5mhcn+gaQoLZjPAKIR0=";
    };
  
    nativeBuildInputs = [
  