(* simpl inserts a cast even if it does not do anything (see https://coq.zulipchat.com/#narrow/stream/237656-Coq-devs.20.26.20plugin.20devs/topic/exact_no_check.2C.20repeated.20casts.20in.20proof.20terms/near/259371220
TODO: maybe the try progress can be removed after https://github.com/coq/coq/pull/15104 is merged? *)