this derivation will be built:
  /nix/store/qzg703g9y97vv3ja7gpb8zjz47l1af6m-inputDerivation-effect-docs-pages.drv
building '/nix/store/qzg703g9y97vv3ja7gpb8zjz47l1af6m-inputDerivation-effect-docs-pages.drv'...