proposition: Lemma unit_r'_pure (A : Type) : unit_r' ⩯ @pure _ _ A (A + void) unit_r'.
proof: Proof. reflexivity. Qed.
imports: Coq(Program Setoid Morphisms RelationClasses) ExtLib(Structures.Monad) ITree(Basics.Basics Basics.Category Basics.Monad Basics.CategoryFunctor Basics.CategoryKleisli Basics.Function)