anchor.diff:    # Tests depend on cairo, which is undesirable (it pulls in lots of
     # other dependencies).
     configureFlags = [ "--disable-tests" ];
  +
  +  preConfigure = ''
  +    sed 's|/usr/bin/env ||' -i tools/g-ir-tool-template.in
  +  '';
   
     postInstall = "rm -rf $out/share/gtk-doc";
   
  
positive.code: # In that case its about 6MB which could be separated
  
  let
    ver_maj = "1.44";
    ver_min = "0";
  in
  stdenv.mkDerivation rec {
  
negative.code: 
    src = fetchurl {
      url = "mirror://gnome/sources/gobject-introspection/${ver_maj}/${name}.tar.xz";
      sha256 = "6658bd3c2b8813eb3e2511ee153238d09ace9d309e4574af27443d87423e4233";
    };
  
    buildInputs = [ flex bison pkgconfig python ]
  