As a result some lock file packages are no longer in the pool, so the
former installed map, now present map cannot use package ids anymore
Need to revisit some more code later to simplify this, todo notes left
Ensures packages get loaded from locked repo correctly. We may not want
to support this particular use-case at all, but for now it fixes the
existing test, so we may want to revisit this later.
Nils Adermann
Jordi Boggiano