karabiner-hyperkey-config.json

{
    "manipulators": [
        {
            "description": "Change caps_lock to command+control+option+shift.",
            "from": {
                "key_code": "caps_lock",
                "modifiers": {
                    "optional": [
                        "any"
                    ]
                }
            },
            "to": [
                {
                    "key_code": "left_shift",
                    "modifiers": [
                        "left_command",
                        "left_control",
                        "left_option"
                    ]
                }
            ],
            "type": "basic"
        }
    ]
}