this derivation will be built:
  /nix/store/jcj21ldxqml33y30lfndd67h29rmb9d2-inputDerivation-effect-docs-pages.drv
building '/nix/store/jcj21ldxqml33y30lfndd67h29rmb9d2-inputDerivation-effect-docs-pages.drv'...