this derivation will be built:
  /nix/store/kd370ai1zx6ilndlznvfjp406h1bh0hd-inputDerivation-effect-docs-pages.drv
building '/nix/store/kd370ai1zx6ilndlznvfjp406h1bh0hd-inputDerivation-effect-docs-pages.drv'...