this derivation will be built:
  /nix/store/5hrmfki4zkq40a4v7m4py68br2ja4m2y-inputDerivation-effect-docs-pages.drv
building '/nix/store/5hrmfki4zkq40a4v7m4py68br2ja4m2y-inputDerivation-effect-docs-pages.drv'...