text: """`appengine_config` gets loaded when starting a new application instance."""
  import os
  import vendor
  # insert `lib` as a site directory so our `main` module can load
  # third-party libraries, and override built-ins with newer
  # versions.
  vendor.add(os.path.join(os.path.dirname(os.path.realpath(__file__)), 'lib'))
  
  