Thanks for your answer Gustavo!
Just a quick question: what about repoze.who (using sql database) and
users/groups/permissions? is it also, like you said,"optional"? from what
I've seen in the docs for repoze.what quickstart, setup_sql_auth needs user,
group and permission class as arguments. but also in docs for repoze.who
SQLAlchemyAuthenticatorPlugin I saw there's only *user_class needed
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