The library doesn't seem to call the qdbus program anywhere (and it better doesn't):
$ strings /usr/lib/x86_64-linux-gnu/libQtDBus.so.4.8.0 | grep qdbus _qdbus_slotCache
So I think demoting qdbus to a suggests is fine, or dropping it entirely.
The library doesn't seem to call the qdbus program anywhere (and it better doesn't):
$ strings /usr/lib/ x86_64- linux-gnu/ libQtDBus. so.4.8. 0 | grep qdbus
_qdbus_slotCache
So I think demoting qdbus to a suggests is fine, or dropping it entirely.