∀ {R : Type u} [inst : Ring R] {ι : Type v} (Z : ι → ModuleCat R) [inst_1 : CategoryTheory.Limits.HasProduct Z] (i : ι),
  CategoryTheory.CategoryStruct.comp (ModuleCat.piIsoPi Z).hom (ModuleCat.ofHom (LinearMap.proj i)) =
    CategoryTheory.Limits.Pi.π Z i