these 2 derivations will be built:
  /nix/store/9gil72a6fs37qf0yxndrhipmycdw6afc-nix-grpc-store-0.1.0.drv
  /nix/store/57afz6i8rlmparynzqrw4dk2nd1cx97y-nix-grpc-store-dispatcher.drv