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:     gtk3
      glib
      grilo
      totem-pl-parser
      grilo-plugins
      gst_all_1.gstreamer
      gst_all_1.gst-plugins-base
      (gst_all_1.gst-plugins-good.override { gtkSupport = true; })
      gst_all_1.gst-plugins-bad
      gst_all_1.gst-plugins-ugly
      gst_all_1.gst-libav
      libpeas
      libhandy
      shared-mime-info
      gdk-pixbuf
      libxml2
  