this derivation will be built:
  /nix/store/344i571svpx1aj8g96xr2s0yqjchp7zy-inputDerivation-effect-docs-pages.drv
building '/nix/store/344i571svpx1aj8g96xr2s0yqjchp7zy-inputDerivation-effect-docs-pages.drv'...