this derivation will be built:
  /nix/store/r5l8s84y7mdlv5wsr736y7xzklw46jj2-inputDerivation-effect-docs-pages.drv
building '/nix/store/r5l8s84y7mdlv5wsr736y7xzklw46jj2-inputDerivation-effect-docs-pages.drv'...