What state are the docs for "packaging" in right now? Of: http://docs.python.org/dev/packaging/setupcfg.html and http://docs.python.org/dev/packaging/introduction.html ... the latter comes directly after the former in navigation order. The former describes setup.cfg-driven and presumably pysetup-driven stuff, but the latter goes on to discuss setup.py syntax and looks like it might be distutils docs with a bit of search-and-replace done. - C