This is as much as we can do until pydcs actually adds the py.typed
file. Once that's added there are a few ugly monkey patching corners
that will just need `# type: ignore` for now, but we can't pre-add those
since we have mypy warning us about superfluous ignore comments.
(cherry picked from commit 96c7b87ac7ef9382ffad9c3b5846fd8c0df8b0a2)
