anchor.diff:  , libxkbcommon
   , mesa_noglu
   , pango
  +, rest
   , shared_mime_info
   , wayland
   , xlibsWrapper
  
positive.code:     #"--enable-modules"
      (enFlag "cups" (cups != null) null)
      "--disable-papi"
      (enFlag "cloudprint" (gnome3.rest != null && json-glib != null) null)
      (enFlag "test-print-backend" (cups != null) null)
      "--enable-schemas-compile"
      (enFlag "introspection" (gobject-introspection != null) null)
  
negative.code: , fontconfig
  , gdk-pixbuf
  , glib
  , gobject-introspection
  , gnome-wrapper
  , json-glib
  