installer: enable xe-guest-utilities only on x86

Tries to find a target specific makefile for aarch64 which does not
exist.

Changed files
+1 -1
nixos
modules
+1 -1
nixos/modules/installer/cd-dvd/installation-cd-graphical-base.nix
···
services.qemuGuest.enable = true;
virtualisation.vmware.guest.enable = pkgs.stdenv.hostPlatform.isx86;
virtualisation.hypervGuest.enable = true;
-
services.xe-guest-utilities.enable = true;
+
services.xe-guest-utilities.enable = pkgs.stdenv.hostPlatform.isx86;
# The VirtualBox guest additions rely on an out-of-tree kernel module
# which lags behind kernel releases, potentially causing broken builds.
virtualisation.virtualbox.guest.enable = false;