these 2 derivations will be built:
  /nix/store/c5zanyyiglwyhdj02kbws9vll8wl86l0-nix-grpc-store-0.1.0.drv
  /nix/store/swnwq76zafrm61vs6mb7xlc27l8ha9w3-nix-grpc-store-dispatcher.drv