this derivation will be built:
  /nix/store/sd2l4jhgzb4cf2hpygf5g7xm4nkpxcq9-inputDerivation-effect-docs.drv
building '/nix/store/sd2l4jhgzb4cf2hpygf5g7xm4nkpxcq9-inputDerivation-effect-docs.drv'...