λ(nix : ../NixPrelude.dhall) →
  let Any = ./Type.dhall

  let Any/select = ./select.dhall nix

  let Any/hasAttr = ./hasAttr.dhall nix

  in  λ(e : Any) →
      λ(attr : Text) →
        if Any/hasAttr e attr then Some (Any/select e attr) else None Any