this derivation will be built:
  /nix/store/46dp5qsgl8sk9cwcfhxwh9m1vc9y1vqp-inputDerivation-effect-docs.drv
building '/nix/store/46dp5qsgl8sk9cwcfhxwh9m1vc9y1vqp-inputDerivation-effect-docs.drv'...