this derivation will be built:
  /nix/store/xfn7gbgypzysnxlif1gq84ry17jpp69d-inputDerivation-effect-docs-pages.drv
building '/nix/store/xfn7gbgypzysnxlif1gq84ry17jpp69d-inputDerivation-effect-docs-pages.drv'...