this derivation will be built:
  /nix/store/1lqf1ggyqnp5hk1b6v99bm8vw6a0jp01-inputDerivation-effect-docs-pages.drv
building '/nix/store/1lqf1ggyqnp5hk1b6v99bm8vw6a0jp01-inputDerivation-effect-docs-pages.drv'...