these 2 derivations will be built:
  /nix/store/j09sz70lwizvksvbl8g8ln5646qxakz5-nix-grpc-store-0.1.0.drv
  /nix/store/ibgv75jlzrvwxyb34w6psxx1dvdlzhyn-nix-grpc-store-dispatcher.drv