Prototype for Saxon and eXist
The ideal situation would be to have support for this packaging system right into the various processors, tools and IDEs. Vendors will follow if there are enough users of this system, and users will follow if there is enough support into their tools. So to break that circle, we have to provide an implementation for various processors, even a partial implementation. Doing so, we can get feedback from the community while defining the module, the idea being the module will be easier to explain and that will ease discussions (by having something concrete to discuss about...)
So you can find here a prototype implementation for Saxon, and another one for eXist. They are not production-ready, but they should be stable enough to help you installing and managing the libraries using the Packaging System (all the EXPath module implementations, of course, but we plan also to help writers of major XSLT and XQuery libraries to package their work, for instance the stylesheets for DocBook, XSLStyle, FunctX for both XSLT and XQuery, the stylesheets for DITA, the FXSL library, etc.)
See the implementations page for further details.