{A : Type} `{Is1Cat A, hbp : !HasBinaryProducts A^op} : HasBinaryCoproducts A := hbp.
Require Import Basics.Overture Basics.Tactics Basics.Decidable. Require Import Types.Bool. Require Import WildCat.Core WildCat.Equiv WildCat.Forall WildCat.NatTrans