these 2 derivations will be built:
  /nix/store/2ff15xlilb5ac21j5nddmw7rchkbvnz4-nix-grpc-store-0.2.2.drv
  /nix/store/zqibi9r9kv9rbsbfqm68043rblgb4c1w-nix-grpc-store-dispatcher.drv