According to the docs, tox creates "a source distribution of the current project by invoking python setup.py sdist".
How do I configure tox so it produces a wheel instead and then uses it for testing?:
python setup.py bdist_wheel --universal
tox 4
Set package = wheel in tox configuration.
tox 3
There is a tox plugin that seems to do exactly that. I haven't tested it so I can't vouch for it personally:
Alternatively you could read these discussions on this exact topic, there are some workarounds mentioned in there: