these 2 derivations will be built:
  /nix/store/z88lazp2ccfz3vsv7hv0dzx4ahkhsl3a-nix-grpc-store-0.2.2.drv
  /nix/store/h3cbjdpaphv6fwx1gsn6x9pnl42bx09c-nix-grpc-store-dispatcher.drv