anchor.diff:    pname = "elementary-greeter";
     version = "6.0.1";
   
  -  repoName = "greeter";
  -
     src = fetchFromGitHub {
       owner = "elementary";
  -    repo = repoName;
  +    repo = "greeter";
       rev = version;
       sha256 = "1f606ds56sp1c58q8dblfpaq9pwwkqw9i4gkwksw45m2xkwlbflq";
     };
  
positive.code:     clutter-gtk # else we get could not generate cargs for mutter-clutter-2
      elementary-gtk-theme
      elementary-icon-theme
      elementary-settings-daemon
      gnome-settings-daemon
      gdk-pixbuf
      granite
  
negative.code:       # dbus-launch needed in path
        --prefix PATH : "${dbus}/bin"
  
        # for `io.elementary.wingpanel -g`
        --prefix PATH : "${wingpanel-with-indicators}/bin"
  
        # for the compositor
  