I get type error if I use __root__ from pydantic while inheriting from SQLModel

[jd-solanki]

First Check

• I added a very descriptive title to this issue.
• I used the GitHub search to find a similar issue and didn't find it.
• I searched the SQLModel documentation, with the integrated search.
• I already searched in Google "How to X in SQLModel" and didn't find any information.
• I already read and followed all the tutorial in the docs and didn't find an answer.
• I already checked if it is not related to SQLModel but to Pydantic.
• I already checked if it is not related to SQLModel but to SQLAlchemy.

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Example Code

from sqlmodel import SQLModel
from pydantic import BaseModel

data = [
    { "id": 1, "name": "awesome-product" }
]

class ProductBase(SQLModel):
    name: str

class ProductOut(ProductBase):
    id: int

# Here 👋  If I inherit from `SQLModel`` then I get type error. However, If I inherit from `BaseModel` then I don't get error.
# UnComment below line and comment the `SQLModel` usage to resolve the type error
# class ProductList(BaseModel):
class ProductList(SQLModel):
    __root__: list[ProductOut]

class SomeResponse(SQLModel):
    products: ProductList
    msg: str

product_list_model = ProductList.parse_obj(data)
SomeResponse(products=product_list_model, msg="Hello world")

Description

I get a type error if I inherit ProductList model from SQLModel saying:

Argument of type "SQLModel" cannot be assigned to parameter "products" of type "ProductList" in function "__init__"
  "SQLModel" is incompatible with "ProductList"

However, If I use BaseModel from pydantic for inheritance error went away.

Below line gives type error

class ProductList(SQLModel):

Below line looks fine

class ProductList(BaseModel):

Operating System

Linux

Operating System Details

Ubuntu 21.10

SQLModel Version

0.0.6

Python Version

3.10.2

Additional Context