docs: def main(global_config, **settings):
      """ This function returns a Pyramid WSGI application.
      """
      # Initialize the database
      engine = engine_from_config(settings, 'sqlalchemy.')
      configure_sql(engine)
  
      secure_cookies = settings.get('secure_cookies') != 'false'
      if 'pyramid_debugtoolbar' in settings['pyramid.includes']:
          create_schema(global_config['__file__'])
          populate_database()
          secure_cookies = False
  
      # Configure the webapp
      authen = AuthTktAuthenticationPolicy(secret=settings['auth_secret'],
                                           callback=group_finder,
                                           secure=secure_cookies,
                                           include_ip=False, hashalg='sha512',
                                           wild_domain=False, max_age=5000000)
      author = ACLAuthorizationPolicy()
      session_factory = UnencryptedCookieSessionFactoryConfig(
          settings['cookie_secret'])
      config = Configurator(settings=settings, authentication_policy=authen,
                            authorization_policy=author, root_factory=Root,
                            session_factory=session_factory)
      config.add_static_view('static', 'static', cache_max_age=3600)
      # Add attributes to request
      config.add_request_method(get_user, 'user', reify=True)
      config.add_request_method(get_queue_func, 'queue', reify=True)
  
      add_routes(config)
      config.scan()
      return config.make_wsgi_app()