We should really try to make Search 6 compatible with ORM 6 from the start, so as not to confuse users. We might even want to wait for an ORM release if necessary.

Note that we will still need to make migrating from Search 6 easy; to that end, we should also provide a separate module targeting ORM 5, named hibernate-search-orm-5. This will allow users to migrate to Search 6 first, then ORM 6.