fact: Definition path_forall_1 `{P : A -> Type} (f : forall x, P x) : (path_forall f f (fun x => 1)) = 1 := eta_path_forall f f 1.
imports: Basics.Overture Basics.Equivalences Basics.PathGroupoids Basics.Tactics Basics.Trunc Basics.Contractible Basics.Trunc (istrunc_forall)