pxt-calliope/libs/cpp-test/pxt.json

{
    "name": "cpp-test",
    "description": "Testing C++",
    "files": [
        "support.cpp",
        "hello.ts"
    ],
    "public": true,
    "microbit": {
        "config": {
            "MICROBIT_BLE_ENABLED": "0"
        }
    },
    "dependencies": {
        "microbit": "file:../microbit"
    }
}