Section "InputClass"
   MatchIsKeyboard "yes"
   Identifier "Default Keyboard"
   Driver "evdev"
   Option "CoreKeyboard"
   Option "XkbLayout" "us,ru"
   Option "XkbVariant" "colemak"
   Option "XkbOption" "grp:shift_caps_switch"
EndSection

[stanis@home ~] % setxkbmap -print -verbose 10 [13:07:06]
 Setting verbose level to 10
 locale is C
 Applied rules from evdev:
 rules: evdev
 model: pc105
 layout: us,ru
 variant: colemak
 Trying to build keymap using the following components:
 keycodes: evdev+aliases(qwerty)
 types: complete
 compat: complete
 symbols: pc+us+ru:2+inet(evdev)
 geometry: pc(pc105)
 xkb_keymap {
 xkb_keycodes { include "evdev+aliases(qwerty)" };
 xkb_types { include "complete" };
 xkb_compat { include "complete" };
 xkb_symbols { include "pc+us+ru:2+inet(evdev)" };
 xkb_geometry { include "pc(pc105)" };
 };