these 2 derivations will be built:
  /nix/store/vc28bqmmyn1ihxnsi6k8cy8wfxzqrpvq-nix-grpc-store-0.2.3.drv
  /nix/store/4g84hxqqr23kklwlsak3vfril7ndaxdh-nix-grpc-store-dispatcher.drv