this derivation will be built:
  /nix/store/nb6qi40pkz1ydy5y3jjn73d0ns9zg9w4-inputDerivation-effect-docs.drv
building '/nix/store/nb6qi40pkz1ydy5y3jjn73d0ns9zg9w4-inputDerivation-effect-docs.drv'...