Hi, I authored the flake8-future-annotations plugin: https://github.com/TylerYep/flake8-future-annotations and I think it would be a good addition to ruff.

The goal of the lint rule is to verifies python 3.7+ files use from future import annotations if a type is used in the module that can be rewritten using PEP 563 e.g. typing.List, Dict, Optional, Union, etc.

It pairs especially well with pyupgrade with the --py37-plus flag or higher, since pyupgrade only replaces type annotations with the PEP 563 rules if from future import annotations is present, which I also see is included in ruff.

I plan to take a stab at implementing it (I see many of the necessary components are already tracked in ast.rs) in the following order:

• Add FA100 (missing future annotations import in Python 3.7+)
• Add an autofix for FA100 (adds missing future annotations import)
• Add FA102 (uses simplified types like list or dict but missing future annotations import in Python 3.7 to 3.10)

All feedback is welcome, thanks!