these 2 derivations will be built:
  /nix/store/lrjd8lab5zxh1rwfjlfsrj43j6j70r52-nix-grpc-store-0.1.0.drv
  /nix/store/r520cgax29wvswcx9pj89zkdy4ga3hrq-nix-grpc-store-dispatcher.drv