A config loader for the Foo project.
virtualenv create -p python3.6 venv/
./venv/bin/pip install pip-tools
./venv/bin/pip install -r requirements.txt -r requirements-test.txt
./venv/bin/pip-compile requirements.in
./venv/bin/pip-compile requirements-test.in
env PYTHONPATH=. ./venv/bin/pytest test