these 2 derivations will be built:
  /nix/store/zidgl0f1nmig8qrlsrsqjdlkfmchwpz8-nix-grpc-store-0.1.0.drv
  /nix/store/5nh9wjdaxbvhi9lprv2pxjlixxz46jai-nix-grpc-store-dispatcher.drv