anchor.diff:  
   stdenv.mkDerivation rec {
     pname = "gnome-control-center";
  -  version = "3.38.1";
  +  version = "3.38.4";
   
     src = fetchurl {
       url = "mirror://gnome/sources/${pname}/${lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
  -    sha256 = "09i011hf23s2i4wim43vjys7y4y43cxl3kyvrnrwqvqgc5n0144d";
  +    sha256 = "sha256-SdxjeNTTXBxu1ZIk9WNpFsK2+km7+4tW6xmoTW6QzRk=";
     };
   
     # See https://mail.gnome.org/archives/distributor-list/2020-September/msg00001.html
  
positive.code:       inherit glibc libgnomekbd tzdata;
        inherit cups networkmanagerapplet;
      })
  
      # Fix double free when leaving user accounts panel.
      # https://gitlab.gnome.org/GNOME/gnome-control-center/merge_requests/853
      (fetchpatch {
        url = "https://gitlab.gnome.org/GNOME/gnome-control-center/commit/e80b4b5f58f448c5a3d38721f7bba32c413d46e7.patch";
        sha256 = "GffsSU/uNS0Fg2lXbOuD/BrWBT4D2VKgWNGifG0FBUw=";
      })
      (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=";
      })
    ];
  
    postPatch = ''
  
negative.code: { fetchurl
  , fetchFromGitLab
  , lib, stdenv
  , substituteAll
  , accountsservice
  