On behalf of the Python Packaging Authority, I am pleased to announce
that we have just released pip 20.2, a new version of pip. You can
install it by running python -m pip install --upgrade pip.
The highlights for this release are:
- The beta of the next-generation dependency resolver is available
- Faster installations from wheel files
- Improved handling of wheels containing non-ASCII file contents
- Faster `pip list` using parallelized network operations
- Installed packages now contain metadata about whether they were
requested by the user (PEP 376’s REQUESTED file)
The new dependency resolver is *off by default* because it is *not yet
ready for everyday use*. The new dependency resolver is significantly
stricter and more consistent when it receives incompatible instructions,
and reduces support for certain kinds of constraints files, so some
workarounds and workflows may break. Please test it with the
`--use-feature=2020-resolver` flag. Please see our guide on how to test
and migrate, and how to report issues
We are preparing to change the default dependency resolution behavior
and make the new resolver the default in pip 20.3 (in October 2020).
As with all pip releases, a significant amount of the work was
contributed by pip’s user community. Huge thanks to all who have
contributed, whether through code, documentation, issue reports and/or
discussion. Your help keeps pip improving, and is hugely appreciated.