these 2 derivations will be built:
  /nix/store/109avcf2z4iqfml9vy68p3s662bzij3w-nix-grpc-store-0.2.0.drv
  /nix/store/hdgrxbqv5dggb1zjl8sa8hq88mqwb6rp-nix-grpc-store-dispatcher.drv