∀ {C : Type u_1} {ι : Type u_2} [inst : CategoryTheory.Category.{v_1, u_1} C] [inst_1 : CategoryTheory.Preadditive C]
  {c : ComplexShape ι} (K L : HomologicalComplex C c)
  [inst_2 : ∀ (i : ι), CategoryTheory.Limits.HasBinaryBiproduct (K.X i) (L.X i)] (i : ι),
  CategoryTheory.CategoryStruct.comp (CategoryTheory.Limits.biprod.inl.f i) (CategoryTheory.Limits.biprod.snd.f i) = 0