Mypy errors with hydrated_dataclass

[jzazo]

Hi. The following code from your documentation raises a mypy error (without the frozen argument):

@hydrated_dataclass(target=dict)
class DictConf:
    x: int = 2
    y: str = 'hello'

DictConf(x=10)  #  mypy[call-arg] Unexpected keyword argument "x" for "DictConf"

[rsokl]

mypy doesn't support dataclass transforms yet, but it looks like they are close: python/mypy#14293 . We develop against pyright for our support for static analysis as pyright is much faster (on the order of years) to implement new typing features.