this derivation will be built:
  /nix/store/8wmbhzl57qz3kb9m7cx7zdsyxm8rj6k2-inputDerivation-effect-docs.drv
building '/nix/store/8wmbhzl57qz3kb9m7cx7zdsyxm8rj6k2-inputDerivation-effect-docs.drv'...