How to specify a generated model class, from django-simple-history, as a sender for a signal?

I would like to listen for pre_create_historical_record signal provided by simple-history package but only from certain sender. The problem is that historical models are generated by simple-history and I can't figure out how can I import class "core.HistoricalUser" as a type to set as sender.

You can get to the model class by going through the history manager as documented here.

In your specific case something like – assuming your history manager is called history and the model you are tracking history for is User:

pre_create_historical_record.connect(
    signal_receiver_function, 
    sender=User.history.model
)