Comment 5 for bug 843101

For some reason, the above method still resulted in a segfault for me later on down the line. What I did to avoid the segfault was:

o Remove the old versions from my virtualenv.
o Download greenlet and eventlet trunk.
o Install them into my virtual env (in that order)
o Run keystone again.

Seems to work now. I'm following the upstream issue:

https://bitbucket.org/ambroff/greenlet/issue/29/segfault-on-fedora-15

And will see about getting the Fedora maintainer of greenlet to update when a version with the fix is released.