> I’d rather have the language … check out Lean 4 then. Its syntax system is based on Racket but —instead of parens— implements stuff like [JSX syntax](https:/

> I’d rather have the language … check out Lean 4 then. Its syntax system is based on Racket but —instead of parens— implements stuff like [JSX syntax](https://github.com/leanprover-community/ProofWidgets4/blob/d5230b84587659f474a3d3cff68b8e8d9ad3ba5b/ProofWidgets/Data/Html.lean https://github.com/leanprover-community/ProofWidgets4/blob/d...) and a [maze](https://github.com/dwrensha/lean4-maze https://github.com/dwrensha/lean4-maze)