qmk-firmware/keyboards/40percentclub/4pack/info.json

{
    "keyboard_name": "4pack", 
    "url": "", 
    "maintainer": "qmk", 
    "width": 4, 
    "height": 1, 
    "layouts": {
        "LAYOUT": {
            "layout": [{"x":0, "y":0}, {"x":1, "y":0}, {"x":2, "y":0}, {"x":3, "y":0}]
        }
    }
}