Log Message:
py-pip: updated to 20.2.4

20.2.4 (2020-10-16)
===================

Deprecations and Removals
-------------------------
- Document that certain removals can be fast tracked.
- Document that Python versions are generally supported until PyPI usage falls \ 
below 5%.

Features
--------
- New resolver: Avoid accessing indexes when the installed candidate is preferred
  and considered good enough.
- Improve error message friendliness when an environment has packages with
  corrupted metadata.
- Cache package listings on index packages so they are guarenteed to stay stable
  during a pip command session. This also improves performance when a index page
  is accessed multiple times during the command session.
- New resolver: Tweak resolution logic to improve user experience when
  user-supplied requirements conflict.

Bug Fixes
---------
- New resolver: Correctly respect ``Requires-Python`` metadata to reject
  incompatible packages in ``--no-deps`` mode.
- New resolver: Pick up hash declarations in constraints files and use them to
  filter available distributions.
- New resolver: If a package appears multiple times in user specification with
  different ``--hash`` options, only hashes that present in all specifications
  should be allowed.

Improved Documentation
----------------------
- Add ux documentation