Answering Eric:

'change default repository' would set a value that pip_gui would pass to subsequent install requests with the --index-url option.  On Windows, http://www.lfd.uci.edu/~gohlke/pythonlibs/ is essential and should be pre-listed as an option to select.

'search' (for package on pypi) is a pip command.  Try "pip search xyz".  On Windows, I would also want to be able to search the url above.

In the email, I said pip-test.py 'after applications'.