Pipwrap

You can now see discrepancies between your installed packages and your requirements files with:
piplint --lint
piplint -l

The dry-run option (-n) has been removed as it is redundant with -l

When updating requirements files, you can now specify --clean (-c) to remove any packages from requirements files that are not installed in the virtualenv.

pipwrap simplifies handling Python project requirements across multiple environments.
You can:
Inspect a list of packages and create or update requirements files
Remove stray packages in virtualenv