this derivation will be built:
  /nix/store/fyvqwzwxx8wy4xrsa3vpn1bn7mb05lq3-inputDerivation-effect-docs.drv
building '/nix/store/fyvqwzwxx8wy4xrsa3vpn1bn7mb05lq3-inputDerivation-effect-docs.drv'...