this derivation will be built:
  /nix/store/jdr1m9jsri77qr2a8bgg56vjnpzlzvdw-inputDerivation-effect-docs-pages.drv
building '/nix/store/jdr1m9jsri77qr2a8bgg56vjnpzlzvdw-inputDerivation-effect-docs-pages.drv'...