hi,
it is quite straightforward, but i have not seen it around here...
download UNIX package from https://colemak.com/Unix and install it into the system
# wget https://colemak.com/pub/unix/colemak-1.0.tar.gz
# tar xzf colemak-1.0.tar.gz
# cp colemak-1.0/linux_console/colemak.iso15.kmap /lib/kbd/keymaps/i386/qwerty/colemak.map
# gzip /lib/kbd/keymaps/i386/qwerty/colemak.mapsetup colemak as default keyboard layout
# sed -i 's/^KEYTABLE="[^"]*"/KEYTABLE="colemak"/' /etc/sysconfig/keyboardoh, and i had to reboot. that's it.
enjoy!