macOS US layout fix tick location on ISO Keyboards + Capslock --> LCtrl

keyremap.sh

#!/usr/bin/env bash

set -euo pipefail
IFS=$'\n\t'

if [ "$(id -u)" -ne 0 ]; then
    echo "Script has to be run as root"
	exit 1
fi
KEYMAP=$(cat << EOF | tr -d ' ' | grep -v '^#' | tr -d '\n'
# https://apple.stackexchange.com/a/374074
# https://developer.apple.com/library/archive/technotes/tn2450/_index.html
{"UserKeyMapping":[
{
    # Caps Lock --> Left Control
    "HIDKeyboardModifierMappingSrc":0x700000039,
    "HIDKeyboardModifierMappingDst":0x7000000E0
},
{
    # Grave Accent and Tilde --> Non-US \ and |
    "HIDKeyboardModifierMappingSrc":0x700000035,
    "HIDKeyboardModifierMappingDst":0x700000064
},
{
    # Non-US \ and | --> Grave Accent and Tilde
    "HIDKeyboardModifierMappingSrc":0x700000064,
    "HIDKeyboardModifierMappingDst":0x700000035
}
]}
EOF
)

set -x
hidutil property --set $KEYMAP >/dev/null
hidutil property --get "UserKeyMapping"

me.user.keyremaps.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>Disabled</key>
	<false/>
	<key>EnvironmentVariables</key>
	<dict>
		<key>__Comment</key>
		<key>__Install_Location</key>
		<string>/Library/LaunchDaemons/ / owner: root group: wheel</string>
	</dict>
	<key>Label</key>
	<string>me.user.keyremaps</string>
	<key>Program</key>
	<string>/Library/LaunchDaemons/keyremap.sh</string>
	<key>RunAtLoad</key>
	<true/>
	<key>StartInterval</key>
	<integer>600</integer>
</dict>
</plist>