fact: Definition homsets_disp {C} {D : disp_cat C} {x y} (f : x --> y) (xx : D x) (yy : D y) : isaset (xx -->[f] yy) := pr2 (pr2 (pr2 (pr2 D))) _ _ _ _ _.
imports: UniMath.Foundations.Sets UniMath.Foundations.PartD UniMath.MoreFoundations.PartA UniMath.MoreFoundations.AxiomOfChoice UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.NaturalTransformations UniMath.CategoryTheory.Core.Univalence UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.whiskering