keychron_qmk_firmware/keyboards/handwired/pytest/macro/keyboard.json

{
    "maintainer": "qmk",
    "layouts": {
        "LAYOUT_custom": {
            "layout": [
                {"label": "KC_Q", "matrix": [0, 0], "x": 0, "y": 0}
            ]
        }
    }
}