this derivation will be built:
  /nix/store/gj5mrcg4x4yxwwnrm1sk3y6wf1cc91cs-inputDerivation-effect-docs.drv
building '/nix/store/gj5mrcg4x4yxwwnrm1sk3y6wf1cc91cs-inputDerivation-effect-docs.drv'...