How to change the keyboard layout of sddm to unorthodox one?

How do I change the layout of sddm to neo2?

https://www.reddit.com/r/kde/comments/k8rheb/is_there_a_way_to_change_the_keyboard_layout_in/

You’ll have to change the “XkbLayout” parameter in the “xkeyboard-config” –

 > l /usr/share/kbd/keymaps/i386/neo/
insgesamt 56
drwxr-xr-x  2 root root 4096 19. Jun 11:49 ./
drwxr-xr-x 13 root root 4096 20. Jan 15:38 ../
-rw-r--r--  1 root root 4702 20. Jan 15:38 adnw.map.gz
-rw-r--r--  1 root root 4694 20. Jan 15:38 bone.map.gz
-rw-r--r--  1 root root 4659 20. Jan 15:38 koy.map.gz
-rw-r--r--  1 root root 9439 20. Jan 15:38 neo.map.gz
-rw-r--r--  1 root root 4707 20. Jan 15:38 neoqwertz.map.gz
-rw-r--r--  1 root root 1429 20. Jan 15:38 README.md
 > 
 > cat /usr/share/kbd/keymaps/i386/neo/README.md 
Neo 2
=====

This directory includes various variants of Neo 2 (Often only referred to as Neo) - an Ergonomic Keyboard Layout, optimized for the German Language.
 .
 .
 .
 >

Also:

> man 7 xkeyboard-config

and search for “neo” –

│de(neo) German (Neo 2) │

In ‘/etc/X11/xorg.conf.d/00-keyboard.conf’ change the value of the parameter “XkbLayout” …

  • Restart the systemddisplay-manager.service” …

Your GUI should automatically pickup the Neo 2 key map – if it doesn’t you’ll also have to change Keyboard Layout within your GUI settings …