def register_external_inputs(self, *variables):
        self.external_inputs.extend(variables)
Explicitely enabling it since we want social account signups.
dataset/ETHPy150Open zomux/deepy/deepy/layers/layer.py/NeuralLayer.register_external_inputs--crossover with--dataset/ETHPy150Open django-de/djangosnippets.org/djangosnippets/adapters.py/DjangoSnippetsSocialAccountAdapter.is_open_for_signup