In tox, one can run disable the automatic installation of the package and run custom commands to setup an environment.

This should allow us to build the mock locally, then install the bindings and test against them.

https://tox.wiki/en/latest/config.html#skip_install

https://tox.wiki/en/latest/config.html#commands

We may need to LD_PRELOAD the mock though.