anchor.diff:      (fetchpatch {
         url = "https://gitlab.gnome.org/GNOME/gnome-control-center/commit/64686cfee330849945f6ff4dcc43393eb1a6e59c.patch";
         sha256 = "4VJU0q6qOtGzd/hmDncckInfEjCkC8+lXmDgxwc4VJU=";
  +    })
  +    # https://gitlab.gnome.org/GNOME/gnome-control-center/-/issues/1173
  +    (fetchpatch {
  +      url = "https://gitlab.gnome.org/GNOME/gnome-control-center/-/commit/27e1140c9d4ad852b4dc6a132a14cd5532d52997.patch";
  +      sha256 = "nU3szjKfXpRek8hhsxiCJNgMeDeIRK3QVo82D9R+kL4=";
       })
     ];
   
  
positive.code:     url = "mirror://gnome/sources/${pname}/${lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
      sha256 = "09i011hf23s2i4wim43vjys7y4y43cxl3kyvrnrwqvqgc5n0144d";
    };
    # See https://mail.gnome.org/archives/distributor-list/2020-September/msg00001.html
    prePatch = (import ../gvc-with-ucm-prePatch.nix {
      inherit fetchFromGitLab;
  
negative.code:     clutter-gtk
      colord
      colord-gtk
      epoxy
      fontconfig
      gdk-pixbuf
      glib
  