A script which change Capslock to Ctrl, and change rightAlt to Capslock for GNOME + Wayland for Arch linux.

add_capslock_ctrl.sh

#! /bin/bash

if ! fgrep -qs 'ctrl:new_ctrl  =   +new_ctrl(new_ctrl)' /usr/share/X11/xkb/rules/evdev; then
    sudo sed -i.bak '/ctrl:nocaps[[:blank:]]*=[[:blank:]]*+ctrl(nocaps)/a\
  ctrl:new_ctrl  =   +new_ctrl(new_ctrl)
' /usr/share/X11/xkb/rules/evdev
fi

cat <<'HEREDOC' |sudo tee /usr/share/X11/xkb/symbols/new_ctrl
partial modifier_keys
xkb_symbols "new_ctrl" {
    replace key <CAPS> { [ Control_L ] };
    modifier_map Control { <CAPS>, <LCTL> };

    replace key <RALT> { [ Caps_Lock ] };
    modifier_map Lock { <RALT> };
};
HEREDOC

gsettings set org.gnome.desktop.input-sources xkb-options "['ctrl:new_ctrl']"

# for to disable this run
# gsettings reset org.gnome.desktop.input-sources xkb-options