Download and unpack pypy3 under env
folder from PyPy website
./env/bin/pypy3 -m ensurepip
./env/bin/pip install -r requirements.txt
./env/bin/pypy3 manage.py makemigrations
./env/bin/pypy3 manage.py migrate
./env/bin/pypy3 manage.py test
./env/bin/pypy3 manage.py runserver