def enable_external_loaders(obj):
    """Enable external service loaders like `VAULT_` and `REDIS_`
    looks forenv variables like `REDIS_ENABLED_FOR_DYNACONF`
    """
    for name, loader in ct.EXTERNAL_LOADERS.items():
        enabled = getattr(obj, f"{name.upper()}_ENABLED_FOR_DYNACONF", False)
        if (
            enabled
            and enabled not in false_values
            and loader not in obj.LOADERS_FOR_DYNACONF
        ):  # noqa
            obj.LOADERS_FOR_DYNACONF.insert(0, loader)
Enable external service loaders like `VAULT_` and `REDIS_`
    looks forenv variables like `REDIS_ENABLED_FOR_DYNACONF`
    
dynaconf/loaders/__init__.py