Struggling to emulate klfc for VIM Colemak bindings on Darwin (macOS) systems with Hammerspoon and Karabiner Background I have mentioned in the past my customized Colemak dotfiles which I used with a customized keyboard layout. Unfortunately, the .keylayout system of MacOS is far more primitive than the elegant klfc setup 1. For an understanding of what we are trying to get at, the following poorly made video will suffice.