this derivation will be built:
  /nix/store/0b1idq6qcfmfb7bfjqcn790pfgw15kml-inputDerivation-effect-docs.drv
building '/nix/store/0b1idq6qcfmfb7bfjqcn790pfgw15kml-inputDerivation-effect-docs.drv'...