this derivation will be built:
  /nix/store/wxc76a9d3dlhlpd2spwxxpdjvn7d9fkg-inputDerivation-effect-docs-pages.drv
building '/nix/store/wxc76a9d3dlhlpd2spwxxpdjvn7d9fkg-inputDerivation-effect-docs-pages.drv'...