anchor.diff:      ++ lib.optional (enableStatic && enableShared) "static";
   
     src = fetchurl {
  -    url = "http://xmlsoft.org/sources/${pname}-${version}.tar.gz";
  -    sha256 = "14hxwzmf5xqppx77z7i0ni9lpzg1a84dqpf8j8l1fvy570g6imn8";
  +    url = "mirror://gnome/sources/${pname}/${lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
  +    sha256 = "KKkvarHzEaz15HhWTEkIjvCsdwkNnHGbvF1Rjx/mLrk=";
     };
   
     patches = [
  
positive.code:   passthru = {
      inherit version;
      pythonSupport = pythonSupport;
    };
  
    meta = with lib; {
  
negative.code: , icu ? null
  , enableShared ? stdenv.hostPlatform.libc != "msvcrt" && !stdenv.hostPlatform.isStatic
  , enableStatic ? !enableShared
  , gnome
  }:
  
  stdenv.mkDerivation rec {
  