FYI, here's the github issue: https://github.com/TurboGears/tg2/issues/69
Upstream claims that repoze.what-plugins isn't required. So please remove it ASAP, as this is blocking repoze.who to migrate. I've also open bug #804844 against python-tg.devtools, which is the other runtime depends of repoze.what. Cheers, Thomas Goirand (zigo)

