anchor.diff:  
   stdenv.mkDerivation rec {
     pname = "gnome-contacts";
  -  version = "42.0";
  +  version = "43.alpha";
   
     src = fetchurl {
       url = "mirror://gnome/sources/gnome-contacts/${lib.versions.major version}/${pname}-${version}.tar.xz";
  -    sha256 = "iALDj9wj9SjawSj1O9zx9sow4OHGhIxCzWyEpeIsUhY=";
  +    sha256 = "KnVZ8EO94HpdRtPQL+gUNoddrBr375efNJwsJrZkfeQ=";
     };
   
     propagatedUserEnvPkgs = [
  
positive.code:   buildInputs = [
      gtk4
      glib
      libportal
      evolution-data-server
      gsettings-desktop-schemas
      folks
  
negative.code: , desktop-file-utils
  , gtk4
  , glib
  , libportal-gtk4
  , gnome-desktop
  , gnome-online-accounts
  , wrapGAppsHook
  