this derivation will be built:
  /nix/store/g9k52w8jdgqhnprq61sbz7rybi58c46f-inputDerivation-effect-docs-pages.drv
building '/nix/store/g9k52w8jdgqhnprq61sbz7rybi58c46f-inputDerivation-effect-docs-pages.drv'...