Comment 5 for bug 563060

Please revert the zope.interface "fix", it is wrong. The package should depend on python-pkg-resources (that is done automatically) because it installs a file that uses it:

$ cat src/zope/__init__.py
# this is a namespace package
try:
    import pkg_resources
    pkg_resources.declare_namespace(__name__)
except ImportError:
    import pkgutil
    __path__ = pkgutil.extend_path(__path__, __name__)

True, this is optional, but the preferred way to declare namespaces.

And it does not fix this crash at all.