Thanks, that’s helpful to see the code. Looks good so far. I’m reviewing our

setup_py.py

code, where we do indeed run

setup.py

as the top-level. I may have spoken too soon about using

PEX_EXTRA_SYS_PATH

. I’m not sure yet. In your current workflow, how are you approaching this? Are you changing the directory into where the

setup.py

is located, and running

setup.py build_ext --inplace

, rather than

a/b/c/setup.py build_ext --inplace

?