Eliminate the undefined types warning #5754
Merged
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I believe we discussed this some time around the end of pycon.
I think another viable alternative might be just changing the default config value, but I think if there's any doubt we should just remove this config setting and handle things the way we did in v1 where we only error for undefined types when you attempt to instantiate them.
It's pretty annoying to have to change config everywhere there is a forward ref, and also need to do the model rebuild.
(I did this because I started down the path of rebuilding dataclasses and I felt like if we were going to make this change, I wanted to do so before porting the logic to dataclasses.)
Selected Reviewer: @samuelcolvin