these 2 derivations will be built:
  /nix/store/m8zw7ff7248dgnga4rpj9crgl5y5fiwv-nix-grpc-store-0.2.3.drv
  /nix/store/a7y2dl67ldi9xiwa3zdqnksgar1dfjix-nix-grpc-store-dispatcher.drv