Dataclass/Pydantic: go-to-def on named arguments in an `__init__` call should go to specific fields

[rchen152]

Describe the Bug

# 1. When using Go To Definition on a model field in `__init__()`, point to the annotated attribute `a`, not the model name:
class Model5(BaseModel):
    a: int

# Go to definition here:
# -----|
#      |
Model5(a=1)

Sandbox Link

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(Only applicable for extension issues) IDE Information

No response

[zsilver1]

I get the same issue with dataclasses:

from dataclasses import dataclass

@dataclass
class EventLog:
    event_name: str

e = EventLog(event_name="test")

Go to definition on event_name takes me to EventLog, not the attribute.

[yangdanny97]

I wonder if the recent work on go-to-def for constructors calls makes this easier

[asukaminato0721]

claim