def provider():
all_providers = (
tuple(def_provider_builders) + self.external_def_providers
)
return Transformer.first_of(
*(p(provider) for p in all_providers)
)
def provider():
aggregate_provider = Transformer.first_of(
*(p(provider) for p in def_provider_builders))
return (aggregate_provider if self.external_def_provider is None
else (aggregate_provider
| self.external_def_provider(provider)))