this derivation will be built:
  /nix/store/l3d72hks91ci7abz9a0hf0ffz3xmxz0x-inputDerivation-effect-docs.drv
building '/nix/store/l3d72hks91ci7abz9a0hf0ffz3xmxz0x-inputDerivation-effect-docs.drv'...