pypa/pip — Issue #384: docs: Option -r is an undocumented feature
Author: gitatr
Created: 2011-11-08 07:04:33+00:00
State: open

There is mention of the "requirements-file" feature, but neither 'pip help' nor
the documentation under http://www.pip-installer.org/en/latest/requirements.html
do inform about the "-r" option.
Only under "Recursive Requirements" one can find a 'hint'.
http://www.pip-installer.org/en/latest/requirements.html#recursive-requirements