[Haskell-cafe] Datomic-like db for Haskell?

Is there any package in Haskell that provides something similar to Datomic http://www.datomic.com/? Basically what I am looking for is a database which could keep all the versions of my data in an efficient way, the same way the persistent data structures do. Ideally it should be implemented over some scalable storage. I looked at Datomic itself but I couldn't find a Haskell client library. The only way to connect to it from a Haskell application is through the REST server which they have just deprecated ( http://docs.datomic.com/rest.html) Thanks!