Open source XQuery CMS

Is anyone aware of an open source, XQuery based Content Management
System or Blog Engine?

My requirements are that this run on Linux and an open source XML DB
such as eXist or Sedna.

I'm a little surprised that no one seems to have written this yet. If
one doesn't exist, then I may just have to write my own. If one does
exist, I may just be able to use and contribute to it.

If I have to write my own, I'm torn between eXist and Sedna. Sedna
seems much more scalable, but eXist has a lot more of the
functionality I need built in that 'd have to recreate for Sedna
first.

-- 
Elliotte Rusty Harold