Release backport of fixing `field_descriptors` to `field_specifiers` in `dataclass_transform` for Python 3.6?

[bluenote10]

It looks like typing_extension versions <4.2 were contained a small bug related to PEP 681: Within the dataclass_transform decorator, the kwarg field_specifiers was erroneously called field_descriptors. This has recently been fixed for versions 4.2+.

The issue is that versions 4.2+ were not released for Python 3.6. This means that under Python 3.6 the code still looks like this:

if hasattr(typing, 'dataclass_transform'):
    dataclass_transform = typing.dataclass_transform
else:
    def dataclass_transform(
        *,
        eq_default: bool = True,
        order_default: bool = False,
        kw_only_default: bool = False,
        field_descriptors: typing.Tuple[
            typing.Union[typing.Type[typing.Any], typing.Callable[..., typing.Any]],
            ...
        ] = (),
    ) -> typing.Callable[[T], T]:
        ...

This means that it is impossible to use dataclass_transform consistently for across Python 3.6 and later versions (code using the proper keyword field_descriptors crashes at runtime under Python 3.6). Furthermore PEP 681 requires these keywords to be specified statically, so generating the kwargs dynamically doesn't seem to work either.

Would it be possible to backport this fix and release an update of typing_extensions for Python 3.6?

[JelleZijlstra]

Python 3.6 has reached its end of life and we no longer support it.

[bluenote10]

I see. It's just a bit unfortunate that this one-liner hasn't been published before dropping Python 3.6 support... Will I now cave in and drop Python 3.6 support in my libraries as well 🤔