Needs documentation for '.netrc' support #7231
Description
Environment
- pip version: >= 9.0
- Python version: all
- OS: all
Description
The only mention of the existing support for loading credentials from a ~/.netrc file seems to be this mention in NEWS.rst:
https://github.com/pypa/pip/blame/53ee380d95b49a66c87eea6bda41b1c1fef7c600/NEWS.rst#L866
Expected behavior
Docs should be added about how this works, what is necessary to trigger loading creds from .netrc, when it's not used, etc.