[bundlebuilder + PyXML/Expat] Wait, here's a quick workaround, as long as it's purely expat that you're after, and not the rest of PyXML: PyXML builds pyexpat.so in .../_xmlplus/parsers/pyexpat.so. You can move pyexpat.so to the top level of site-packages (and optionally get rid of the rest of _xmlplus altogether). Just