pyXML Plone Buildout and newer Debian distros

In the newer debian distros, and Ubuntu 8.04 the pyXML package has been deprecated. It is still available, but doesn't work in the usual way. This became an issue for me when ZSI stopped working on from xml.dom.ext.reader import PyExpat? with ext not found exception. As I was using buildout to compile my workspace I hoped buildout could also restore a working pyXML. In buildout.cfg put:

[buildout]
...
eggs = 
    elementtree
    PyXML
...

Simple.