I have a setup file, that looks roughly like: setup(... extras_require={ 'WSGI-Utils': ['WSGI-Utils'], }, entry_points=""" [paste.server_runner] wsgiutils=paste.script.wsgiutils_server:run_server [WSGI-Utils] """) When I try to use the wsgiutils entry point I get: pkg_resources.UnknownExtra: PasteScript 0.1dev-r3227 has no such extra feature 'wsgi_utils' If I rename it to WSGIUtils is all works. So apparently quoting is being applied differently depending on context. You can get the full setup.py script with: svn cat -r 3231 http://svn.pythonpaste.org/Paste/Script/trunk/setup.py -- Ian Bicking / ianb@colorstudy.com / http://blog.ianbicking.org