this derivation will be built:
  /nix/store/f0r43bmwg7b7hfmxnqgsr0g5d1rcd104-inputDerivation-effect-docs.drv
building '/nix/store/f0r43bmwg7b7hfmxnqgsr0g5d1rcd104-inputDerivation-effect-docs.drv'...