Toggling between input sources with Caps Lock in macOS

I have recently started switching between my Arch Linux PC and MacBook for daily development. I am striving to have as similar user experience between the two machines as possible.

One of the differences that was nagging me for a while was switching between the keyboard input sources. On Arch, I have it mapped to the Caps Lock.

setxkbmap -layout us,lt -option grp:caps_toggle

However the macOS default keyboard shortcuts screen does not allow to assign the Caps Lock to toggle the next input source.

I have used a Karabiner complex modification script to map the Caps Lock to Control + Space, which is the default macOS shortcut to toggle the next input source.

{
  "title": "Map caps lock to ctrl+space",
  "rules": [
    {
      "description": "Map caps lock to ctrl+space",
      "manipulators": [
        {
          "type": "basic",
          "from": {
            "key_code": "caps_lock",
            "modifiers": {
              "optional": [
                "any"
              ]
            }
          },
          "to": [
            {
              "key_code": "spacebar",
              "modifiers": "left_control"
            }
          ]
        }
      ]
    }
  ]
}

Works like a charm!