I've seen a few questions about this, but none that answered it to my satisfaction.
The question:
"I'm on ubuntu-flavored linux. I want to use caps as an escape and a control at the same time. (Esc on tap, control on hold). Karabiner lets me do this in Mac. Is there an easy way to do it for me?"
Previous stabs at the question:
'#9
after setting caps lock to control in GNOME Tweaks. This means the real control keys also function as escape when tapped, which is also great. – shender Feb 05 '21 at 06:37