How to get ç with ' + c on Gnome
Basically you use XCompose to change the keymap from ć to ç. Here is how:
Create a .XCompose
file in your home with this
include "%L"
<dead_acute> <c> : "ç"
Also since I’m using gnome I needed this in my .xprofile
export GTK_IM_MODULE=xim
Thanks @FelipeOLTavares for helping me with this.
Also archwiki has a page on .XCompose and pointed out the .xprofile
need