The following text on the home page of regolith3 causes the system to complain i3 config errors.

[kundeng]

The most common keybinding change is the super key. Regolith uses Xresources as the canonical source of truth for settings, which are read by various UI components. The table of Xresources keys open to user configuration [is available elsewhere](https://regolith-desktop.com/docs/reference/xresources/). To change the default super binding from the “windows” key to “alt”, add the following line to the file ~/.config/regolith3/Xresources:

wm.mod: Mod1
wm.alt: Mod4

I think there is another bug about this wrt regolith2?