these 2 derivations will be built:
  /nix/store/gx47rzwrpfhldqx4drqmb41ny8cxy6hw-nix-grpc-store-0.2.0.drv
  /nix/store/ynsx10zpb59zwndymswjlmz508ldj5iz-nix-grpc-store-dispatcher.drv