fact: Definition contr_cat_cat : contr_cat -> category := pr1.
imports: UniMath.Foundations.Preamble UniMath.MoreFoundations.PartA UniMath.Algebra.Groups UniMath.Algebra.RigsAndRings UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Core.NaturalTransformations UniMath.CategoryTheory.catiso UniMath.CategoryTheory.Additive UniMath.CategoryTheory.CategoriesWithBinOps UniMath.CategoryTheory.PreAdditive UniMath.CategoryTheory.PrecategoriesWithAbgrops UniMath.CategoryTheory.Categories.HSET.Core