these 2 derivations will be built:
  /nix/store/01fca72rd18aigfydfhdj7i3rcnl3qvh-nix-grpc-store-0.1.0-beta.4.drv
  /nix/store/nh2ig41ji0sr53j2qvq54zj5ckh1l3vm-nix-grpc-store-exit-stress.drv