Ask HN: HarmonyOS Open Source Development

Ive got a Huaweii D2 for christmas, and i find it actually very neat. But the data they want from me, and is often required (by having companion apps or activation via personalized shit), is amazing me, even for simple apps. I found out about gadgetbridge, but it does not support everything. Does anyone know more open alternatives to their (JetBrains based) development framework, can i push apps on the watch "the opensource way"?