this derivation will be built:
  /nix/store/96inrqwb2rdbl3jx04183rlj1g5ivd7z-inputDerivation-effect-docs-pages.drv
building '/nix/store/96inrqwb2rdbl3jx04183rlj1g5ivd7z-inputDerivation-effect-docs-pages.drv'...