Brett, sorry missed your question here. If they want to use Java 8 inside the OSGi container and they want to use the Hibernate Java 8 date/time support they'd need that jar.

Ultimately we will have to split the package I think for this to work. That just sucks though because eventually this will get merged back into hibernate-orm once we move to Java 8 as the base JRE.

Ivo, it's not as simple as moving those classes into hibernate-orm as that would mean hibernate-hibernate-orm would need Java 8 at least to compile.