these 2 derivations will be built:
  /nix/store/p7x0ckx22hjb52dc2cwrbpj08q085ilf-nix-grpc-store-0.1.0.drv
  /nix/store/5qqbkkabl6nslibpsr4ah4fb9ayzad1s-nix-grpc-store-dispatcher.drv