∀ (C : Type u) [inst : CategoryTheory.Category.{v, u} C] [inst_1 : HomotopicalAlgebra.CategoryWithCofibrations C]
  {X Y Z : C} (f : X ⟶ Y) (g : X ⟶ Z) [inst_2 : CategoryTheory.Limits.HasPushout f g]
  [(HomotopicalAlgebra.cofibrations C).IsStableUnderCobaseChange] [hg : HomotopicalAlgebra.Cofibration g],
  HomotopicalAlgebra.Cofibration (CategoryTheory.Limits.pushout.inl f g)