Change language in XMonad

@ Debian 11 -

sudo dpkg-reconfigure keyboard-configuration

or manual

sudo vi /etc/default/keyboard

XKBMODEL="pc105"
XKBLAYOUT="us,il"
XKBVARIANT=""
XKBOPTIONS="grp:alt_shift_toggle,grp_led:scroll"
 
BACKSPACE="guess"

sudo udevadm trigger --subsystem-match=input --action=change