(2) Given some restricted set of

python_requirement

specs and a list of supported target platforms, use

pip

with

—find-links

to create a virtualenv, then

pip wheel

to dump the contents of the virtualenv as wheels-only. This is somewhat hacky, and I have a pull request open against

pip

right now to make it so this can be done in a much cleaner way using

pip download

(https://github.com/pypa/pip/pull/3760)