Hi, I got a message from Zied last November about derby. He wrote me that he wouldn't be available for a few months and detailed a bit his work on this package. The blocking issue was that derby depended on javacc 4 and needed work to compile with javacc 5. Upstream is working on this (see [1]). I don't know about vcs or any preliminary stuff. Regards, Bertrand [1] https://issues.apache.org/jira/browse/DERBY-5125