this derivation will be built:
  /nix/store/x8s2r3lp9kv2mp8jm6hdlcc1hkkq9dm7-inputDerivation-effect-docs.drv
building '/nix/store/x8s2r3lp9kv2mp8jm6hdlcc1hkkq9dm7-inputDerivation-effect-docs.drv'...