{C : Type u} →
  {inst : CategoryTheory.Category.{v, u} C} →
    {inst_1 : CategoryTheory.MonoidalCategory C} →
      {P : Sort u_1} →
        {rightDual rightDual' : (X : C) → CategoryTheory.HasRightDual X} →
          { rightDual := rightDual } = { rightDual := rightDual' } → (rightDual ≍ rightDual' → P) → P