anchor.diff:  
   stdenv.mkDerivation rec {
     pname = "totem";
  -  version = "3.38.2";
  +  version = "42.beta";
   
     src = fetchurl {
  -    url = "mirror://gnome/sources/totem/${lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
  -    sha256 = "/OVi4rJsvPwMZ4U43MgfncFc5g1aie5DWJB79jQwTEA=";
  +    url = "mirror://gnome/sources/totem/${lib.versions.major version}/${pname}-${version}.tar.xz";
  +    sha256 = "6Wibk+ZgYFNSaLke+3WDFohpzUOiOktaoo7szBGxIbc=";
     };
   
     nativeBuildInputs = [
  
positive.code: , grilo
  , grilo-plugins
  , libpeas
  , adwaita-icon-theme
  , gnome-desktop
  , gsettings-desktop-schemas
  
negative.code: , ninja
  , gettext
  , gst_all_1
  , python3Packages
  , shared-mime-info
  , pkg-config
  