def app_factory(global_config, **local_config):
""" Use `./bin/paster serve path/to/config.ini to
instantiate a WSGI application.
Enter the debug shell using the command line option
`shell=true`. This will start an interpreter with
the components registry available as `gsm` and the
parsed config as `settings`.
"""
# parse config
settings = _parse_config(global_config, local_config)
# bootstrap components
bootstrapper = Bootstrapper(settings=settings)
bootstrapper.setup_components()
# if the user has set the shell
if settings['shell']:
# get a handle on the component registry and interact
from zope.component import getGlobalSiteManager
gsm = getGlobalSiteManager()
# interact
import code
code.interact(local=locals())
# return wsgi app
return web.WSGIApplication(mapping, settings=settings)
