this derivation will be built:
  /nix/store/9r7q36hm0diqbgqxwkg8pgvq5xmwb0d2-inputDerivation-effect-docs.drv
building '/nix/store/9r7q36hm0diqbgqxwkg8pgvq5xmwb0d2-inputDerivation-effect-docs.drv'...