the answer for this seems not very non-windows-specific, give it a try:
accepted answer It says basically, that you need a file .pypirc with the following section:
[server-login] username:tschellenbach password:******** (the real one)
also, this is the relevant documentation (about .pypirc):
On windows, an you’ll need to set a HOME environ var to point to the directory where this file lives.