"Ambiguous without more context" using parameter packs and key-paths

[hborla]

The following code produces Type of expression is ambiguous without more context

func configure<T, each Element>(
  _ item: T,
  with configuration: repeat (ReferenceWritableKeyPath<T, each Element>, each Element)
) -> T {
  repeat item[keyPath: (each configuration).0] = (each configuration).1 // error: Type of expression is ambiguous without more context
  return item
}

This should compile successfully.

[AnthonyLatsis]

Tested with 23e2f34.