This emulates the behavior where a single site-packages directory
contains all/most PyPi packages. Packages distributed by NVIDIA
currently assume this through the use of rpath as `$ORIGIN/../../`
to reach the `nvidia` package location. Downstream libraries like torch
and jax do not set up the dynamic library search path based on sys.path
either.

This is a casual attempt, but can be refined by others.

TODO:
[] Build binaries for all architectures.

Fixes #274.