Separate into 4 modules * init_instance: load the cubicweb repository from the `pyramid_cubicweb.instance` configuration key * defaults: provides cw-like defaults for the authentication and session management * core: make cubicweb use the authentication and session management of pyramid. It assumes the application provides the auth policies and session factory, and that the `cubicweb.*` registry entries are correctly initialised. This is this only required module or pyramid_cubicweb, the other ones are optional if the application provides its own versions of what they do. * bwcompat: provides a catchall route that delegate the request handling to an old-fashion cubicweb publisher (ie using url_resolver and controllers). Related to #4291173

from pyramid.authentication import SessionAuthenticationPolicy
from pyramid.authorization import ACLAuthorizationPolicy
from pyramid.session import SignedCookieSessionFactory

from pyramid_cubicweb.core import get_principals


def includeme(config):
    config.set_session_factory(
        SignedCookieSessionFactory(
            secret=config.registry.settings['session.secret']
        ))

    config.set_authentication_policy(
        SessionAuthenticationPolicy(callback=get_principals))
    config.set_authorization_policy(ACLAuthorizationPolicy())