Hello, I have the same issue than Rahul with the packaging of pg8000 in Fedora/EPEL [0]
I am proposing a pull request to use the latest 1.10.0 python-six library available in Fedora[1] and Debian[2] repos, I think than I do my homework and all test are passing in suported postgresql but my pull request is bronking the support for python2.5, the last releace of python2.5 is around five years ago[3], I see than Rahul have proposed a patch similar to my pull request[4].
Any way Rahul and me will continue the packaging process patching pg8000 to use the system python-six library, but both will apreciate alot than you accept the pull request, at different from Debian there is still python2.4 in EPEL5, but there is a parallel versión of python2.6 available[5] so suporting python =<2.6 it is fine for both mayor families of GNU/linux out there.