Adds a new 'Pip not installed' section that covers
running `ensurepip` manually, and also references
the relevant section of the Python Packaging User
Guide.
As part of the update, the documentation was updated to normalize
around the term "virtual environment" instead of relying too heavily
on "venv" for the same meaning and leading to inconsistent usage of
either.
Thanks to Steve Piercy for the patch.
- based on pip and other PyPA tools
- includes references to the new Python Packaging User Guide
where appropriate (and the relevant section is at least
partially filled in)
- started new FAQ sections
- both guides aim to introduce users to basic open source
concepts if they aren't aware of them
- existing guides have been relocated (now linked from the
distutils docs) rather then removed, since there is
some needed material that has yet to be relocated to the
distutils docs as a reference for the legacy formats