attempted fix for pypy
attempted fix for pypy

heroku/heroku-buildpack-python,AltSchool/heroku-buildpack-python,Scalingo/python-buildpack,benjaminfox/heroku-buildpack-python-geoip,cloudfoundry/python-buildpack,benmurden/heroku-buildpack-python-ember,smalleats/heroku-buildpack-python,cloudfoundry/python-buildpack,cloudfoundry/python-buildpack,ad-m/heroku-buildpack-python,Scalingo/python-buildpack,skilljar/heroku-buildpack-python,AltSchool/heroku-buildpack-python,benjaminfox/heroku-buildpack-python-geoip,heroku/heroku-buildpack-python,joshfriend/heroku-buildpack-python,edmorley/heroku-buildpack-python,ad-m/heroku-buildpack-python,andela-brotich/wger-buildpack-python,benmurden/heroku-buildpack-python-ember