HSQLDB and Jetty

Hello did anyone succeeded in installing XWiki with HSQLDB and Jetty? I am asking because this looks like the development default setup (as seen in SVN, where a test case exists), but I can't find the way to make it work. For example, how do I import the database? Where is the XML file to import? Is there an ant task which does that (importdb seems not to work out of the box and I don't find the configuration doc)? Thanks, Marc