Running packagedb on Fedora 16

Hello everyone, as you may know, I'd like to start working to extend PackageDB to export its applications database so that it can be used by local application installers. The first step, of course, is getting a local instance of pkgdb running on my machine. Using the method described in README, I get a VersionConflict, because CherryPy 3.2 is installed. I installed also CherryPy 2.3.0 (python-cherrypy2), but apparently paven cannot find it. Also, trying to remove python-cherrypy will also remove TurboGears. I'm on Fedora 16, with full updates, and I'm building from the devel bzr branch. I'm not used to setuptools and python egg packages, so it could be that I'm doing something wrong. I would be glad if you could point me to the right direction. Thank you! Giovanni Campagna