fact: Definition mod_precategory_ob_mor : precategory_ob_mor := make_precategory_ob_mor (module R) (λ M N, modulefun M N).
imports: UniMath.Algebra.Groups UniMath.Algebra.RigsAndRings UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.Univalence UniMath.Algebra.Modules UniMath.Algebra.Modules.Examples UniMath.CategoryTheory.Limits.Zero