[Karabiner-Elements] caps_lock mapping

caps_lock_mapping.json

{
  "title": "caps_lock mapping",
  "rules": [
    {
      "description": "Change caps_lock to command+control+option+shift",
      "manipulators": [
        {
          "from": {
            "key_code": "caps_lock",
            "modifiers": { "optional": ["any"] }
          },
          "to": [
            {
              "key_code": "left_shift",
              "modifiers": ["left_command", "left_control", "left_option"]
            }
          ],
          "type": "basic"
        }
      ]
    },
    {
      "description": "Toogle caps_lock by pressing left_shift then right_shift",
      "manipulators": [
        {
          "from": {
            "key_code": "right_shift",
            "modifiers": {
              "mandatory": ["left_shift"],
              "optional": ["caps_lock"]
            }
          },
          "to": { "key_code": "caps_lock" },
          "to_if_alone": [{ "key_code": "right_shift" }],
          "type": "basic"
        }
      ]
    }
  ]
}

Move this json file to ~/.config/karabiner/assets/complex_modifications