048a14f1f3
In recent glib, change notifications don't actually happen unless all keys have been read, in an effort to reduce unnecessary dbus traffic for shortlived GSettings object and avoid AddMatch calls. But we care about changes here, so we need to make sure we're subscribed, and an easy way to do so is to reuse the same object to watch for changes and to load the active providers at startup. https://bugzilla.gnome.org/show_bug.cgi?id=746509