This essentially allows me to do an overall check general check by running the tests using pytest's `-k basic` syntax. Given that I like running tests often and that, in general, I make typos more often than changes that break core functionality, I think this will reduce cycle times for me.
With the --platform option, a user can download wheels with
a different platform than that of the local machine running the command.
With the --python-version option, a user can
download wheels that are explicitly compatible with a specific
Python interpreter version.
This functionality is meant for utilities that gather dependencies
and prepare distributions for other platforms.
`pip download` has the same functionality as `pip install --download`,
and the behavior of `pip install --download` is preserved with a deprecation
warning. `pip install --download` will be removed in pip version 10.
