∀ {V : Type u_2} [inst : CategoryTheory.Category.{u_1, u_2} V] [inst_1 : CategoryTheory.Limits.HasZeroMorphisms V]
  [inst_2 : CategoryTheory.Limits.HasZeroObject V] (C : ChainComplex V ℕ) (X : V),
  Function.LeftInverse (fun f => HomologicalComplex.mkHomFromSingle f ⋯) fun f => f.f 0