{A : Type} {B : A -> Type} {C : Type} {x1 x2 : A} (p : x1 = x2) (f : B x1 -> C) (y : B x2) : (transport (fun x => B x -> C) p f) y = f (p^ # y). Proof. destruct p; simpl; auto. Defined.
Require Import Basics.Overture Basics.PathGroupoids Basics.Decidable Require Import Types.Forall.