qmk_firmware/keyboards/handwired/pytest/basic/info.json

{
  "maintainer": "qmk",
  "layouts": {
    "LAYOUT_custom": {
      "layout": [
        { "label": "KC_Q", "matrix": [0, 0], "w": 1, "x": 0, "y": 0 }
      ]
    }
  }
}