How to make kexts for new Thinkpad X390 or X1

[xcmdt]

Hello everyone,
I recently managed to install an Hackintosh on my machine GA Z170 WIFI with GTX1060 thanks to this amazing forum.

I was wondering how hard it is to create kexts files for the new Thinkpad laptops.
Do you think the old kexts files for different model will work the same?

Who actually make this files?
How hard is to make one?

Thanks!
xcmdt

 

[NomadS0ul]

Well, i'm also looking for x390 kexts and even guide. Found this https://github.com/Liu-wenxiang/Thinkpad-X390-Yoga-Clover. But it's YOGA, different processor and probably lots of other parts..?