this derivation will be built:
  /nix/store/lqd0k4fa0k5l2fvvq72gdl4jswqqxyb3-inputDerivation-effect-docs-pages.drv
building '/nix/store/lqd0k4fa0k5l2fvvq72gdl4jswqqxyb3-inputDerivation-effect-docs-pages.drv'...