# to know the path: `which pypy`. Then:
virtualenv -p path_to_pypy pypy
# activate, and then:
pip install git+https://bitbucket.org/pypy/numpy.git
pip install git+https://github.com/matplotlib/matplotlib.git matplotlib# to know the path: `which pypy`. Then:
virtualenv -p path_to_pypy pypy
# activate, and then:
pip install git+https://bitbucket.org/pypy/numpy.git
pip install git+https://github.com/matplotlib/matplotlib.git matplotlib