I was using Karabiner for years just to remap caps to a hyper key. A few months ago replaced it with a launchagent to run something like this remapping caps to

I was using Karabiner for years just to remap caps to a hyper key. A few months ago replaced it with a launchagent to run something like this remapping caps to F19 (and using F19 instead of hyper, in hammerspoon) -- has been working great.