actually maybe this is something wrong on my end and not a bug ... i'm going to do more investigating. this was from the error I found earlier:

Exception message: Could not satisfy all requirements for oauthlib>=0.6.2:
    oauthlib>=0.6.2(from: Flask-OAuthlib==0.9.3), oauthlib==0.6.3(from: auth-client==0.2.3)

but this works: so maybe it's something about my auth-client

pex "oauthlib>=0.6.2" "oauthlib==0.6.3"