these 2 derivations will be built:
  /nix/store/rxl2nh7zdrpp35zfik71m0g5x9d5zm2x-nix-grpc-store-0.2.3.drv
  /nix/store/kl554bi4bhyql8cvnbxfia4yj9pb9j53-nix-grpc-store-dispatcher.drv