Implement replace_listeners for source in config (#7620)

Implement replace_listeners for sourced components loaded from a config.

spacy/language.py

@@ -1673,7 +1673,16 @@ def from_config(
  # model with the same vocab as the current nlp object
  source_nlps[model] = util.load_model(model, vocab=nlp.vocab)
  source_name = pipe_cfg.get("component", pipe_name)
+ listeners_replaced = False
+ if "replace_listeners" in pipe_cfg:
+ for name, proc in source_nlps[model].pipeline:
+ if source_name in getattr(proc, "listening_components", []):
+ source_nlps[model].replace_listeners(name, source_name, pipe_cfg["replace_listeners"])
+ listeners_replaced = True
  nlp.add_pipe(source_name, source=source_nlps[model], name=pipe_name)
+ # Delete from cache if listeners were replaced
+ if listeners_replaced:
+ del source_nlps[model]
  disabled_pipes = [*config["nlp"]["disabled"], *disable]
  nlp._disabled = set(p for p in disabled_pipes if p not in exclude)
  nlp.batch_size = config["nlp"]["batch_size"]