Fix the failure caused in #34198 by a suggested change of mine. @vcunat reported in [1]. [1]: https://github.com/NixOS/nixpkgs/pull/34198#issuecomment-361075911
Fix the failure caused in #34198 by a suggested change of mine. @vcunat reported in [1]. [1]: https://github.com/NixOS/nixpkgs/pull/34198#issuecomment-361075911