How do I clear a stale pypi package from Heroku/Cedar's virtualenv?
===

I am building my own flask-oauth in my app's src/lib and adding it to the web application's path via: sys.path.insert(0, os.getcwd() + '/src/lib/flask-oauth')  I have to do this because the pypi package doesn't have support for access_token_params, which google requires.

flask-oauth does not appear in requirements.txt currently, but it did in the past. As a result, it remains in my heroku app's vitualenv and I cannot get rid of it. My app works locally, but on heroku it dies with: TypeError: __init__() got an unexpected keyword argument 'access_token_params'

How can I clear heroku's virtualenv of this stale package? How can I make it use my own local version and not its cached package?

My application will not run on heroku until this is resolved :(