Env does not override nested value when other sources are used about pydantic-settings HOT 2 CLOSED

from pydantic import Field, BaseModel
from pydantic_settings import (
    BaseSettings,
    PydanticBaseSettingsSource,
    SettingsConfigDict,
    YamlConfigSettingsSource,
)


class PydanticBaseSettings(BaseSettings):

    @classmethod
    def settings_customise_sources(
        cls,
        settings_cls: type[BaseSettings],
        init_settings: PydanticBaseSettingsSource,
        env_settings: PydanticBaseSettingsSource,
        dotenv_settings: PydanticBaseSettingsSource,
        file_secret_settings: PydanticBaseSettingsSource,
    ) -> tuple[PydanticBaseSettingsSource, ...]:
        return (init_settings, env_settings, dotenv_settings,
                YamlConfigSettingsSource(settings_cls), file_secret_settings)


class SubSettings(BaseModel):
    value: str


class Settings(PydanticBaseSettings):
    model_config = SettingsConfigDict(yaml_file="config.yaml", env_nested_delimiter="__")

    value: str
    sub: SubSettings


print(Settings())