anchor.diff:  
   stdenv.mkDerivation rec {
     pname = "gnome-initial-setup";
  -  version = "42.beta";
  +  version = "42.rc";
   
     src = fetchurl {
       url = "mirror://gnome/sources/${pname}/${lib.versions.major version}/${pname}-${version}.tar.xz";
  -    sha256 = "ZE3If6EVfL1AQx3ZMuouZc7oHb8X0hiTAK0enqOsPT0=";
  +    sha256 = "7ACze8aXJvlwsAw4hSgq4IPgtGi93iGS24D2ju1eJ3k=";
     };
   
     patches = [
  
positive.code: , polkit
  , webkitgtk
  , systemd
  , libnma
  , tzdata
  , libgnomekbd
  
negative.code:     json-glib
      krb5
      libgweather
      libhandy
      libnma
      libpwquality
      librest
  