these 2 derivations will be built:
  /nix/store/x8caxc1xzaz0ci0zran51lnm61k5ri71-nix-grpc-store-0.2.2.drv
  /nix/store/08d065z0aijp395mhimk5xl8g11a6960-nix-grpc-store-dispatcher.drv