There are 2 repositories under pixelexperience topic.
A Magisk module to hide tablet gesture bar and more [Android 12.1+]
Compiled & emulated my own Android 11 OS using Android Open Source Project (AOSP) on Linux emulator
Android Device Tree for Xiaomi Mi 9 SE
Device Tree for the OnePlus 5T (dumpling)
a little script on pyhton that automatically downloads and flashes via sideload pixelexperience (roms are extracted from sourceforge)
Device Tree for the OnePlus 5 (cheeseburger)