Zope >= 2.9.7 or Zope >= 2.10.3
Five >= 1.2 (http://codespeak.net/z3/five/)
PluginRegistry >= 1.1.1 (http://www.zope.org/Products/PluginRegistry)

OPTIONAL:
GenericSetup >= 1.1 (http://www.zope.org/Products/GenericSetup)