improved error handling

Author: adrelanos

debian/usability-misc.postinst

@@ -58,7 +58,9 @@ generate_grub_keyboard_layouts_maybe() {
          if ischroot; then
            true "INFO: Skipping 'set-grub-keymap --build-all' because postinst is running in chroot, ok."
          else
-           set-grub-keymap --build-all || true
+           if ! set-grub-keymap --build-all; then
+              printf '%s\n' "INFO: Minor issue. Command 'set-grub-keymap --build-all' failed. This means, the GRUB boot menu will have no keyboard layout selection menu, which is a minor usability feature. For most users, no action is required. If you know to need this feature, please execute 'sudo set-grub-keymap --build-all' (in sysmaint session)."
+           fi
          fi
       fi
    fi