The host build replaces the use of the host pip requirements file. This
also updates the dependants of Cython to depend on the host build.
Signed-off-by: Jeffery To <jeffery.to@gmail.com>
This adds $STAGING_DIR to library search paths in setup.py, to avoid
picking up host libraries when linking.
Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>