John Lockwood

Yes. @glyph, being confident about your belief it supports SQLAlchemy-core would be a service.

This script demos the issue: ``` #!/usr/bin/env python # -*- coding: utf-8 -*- from typing import List, Optional from cattr import structure, unstructure import attr @attr.s class Node(object): value: int...

I can confirm you can use the `public.ecr.aws/sam/build-python3.9:latest` image in the same way as you did `lambci/lambda:build-python3.8`