You are working on the pydantic/pydantic-settings repository. The source code is checked out at /testbed at…

You are working on the pydantic/pydantic-settings repository. The source code is checked out at /testbed at…: a task in SWE-Lego-RL-2699 (Harbor dataset). Is it possible to override a deeply nested setting without having to redefine the entirety of the model?