You're welcome to use content from https://bitbucket.org/pypy/compatibility. There is a growing list of dependencies at https://bitbucket.org/pypy/compatibility/wiki/depends.yaml.

That just saved me a hell of a lot of work. Thank you!

You're welcome. You can even clone that and make a wiki for py3k from it if you want. There's a script (in the wiki repo) to parse the wiki into YAML, so reuse of the current content should be easy no matter what format you want.