Idk its gonna work or not, but you will need to put the files under patch2 zip into ramdisk of your device.
Normally ramdisk is under boot.img, if your device have different path push these files there. Give permission and reboot.
Always believe something wonderful is just going to happen.
WARNING:I‘m not responsible for any consequences at all.This is an OEM rom ported from Redmi phone so it may cause wrong behaviors including partition overwritting and may brick your phone or break hardwares.I strongly recommend you take a completely full backup of your device and know how to recovery firmwares in case of any problems.
This is still in early stage and should be normal if some features are broken.
Working on Qualcomm fully-Trebled deivces.
Maybe working on other platfrom fully-Trebled deivces.
8.1 vendor (vndk27) should be needed.
Light HAL(Brightness acting strange, this is a MIUI traditional)
I'm working on A/B version cause I love MIUI, but it's bootlooping for now. I sent my build to my friend who has a Pixel. Maybe it will work with his kernel/vendor.
Huge Thanks to fxsheep & erfanoabdi for making this sGSI. Hopefully we will get A/B to work.
Edit: Seems like we can't get it to boot at all on Pixel. Also with latest OOS update, OP6 Bootloader doesn't allow me to boot Oreo kernels anymore, no idea why, so I can't work on MIUI 10 Oreo anymore, I managed to port from scratch Mi Mix 2S MIUI 10 based on Pie and get to boot animation etc, but I'm getting same keymaster error. And it just doesn't boot further.
Edit2: I found one more version of MIUI 10 Treble on some Chinese website. After adjusting it to boot on A/B, it still gives me same keymaster error! I have no idea why it's showing up. Even when I take keymaster libs from Phh Treble it still shows up. And the rom is almost booting at this point. All apps are in /data partition etc and keymaster is like the only error that I can see in logcat. I wish I had another Treble device to see if it would get same error or if it's just some problem with OP6. And luckily I have a Mi Pad 4 Plus which has Treble but I have to wait for over a month to unlock the bootloader.
Sorry if your experience was so bad mine is totally different, my phone only updated to Android 6 and thanks to the work of the developers of XDA today I have Android 9 Pie Treble. The attitude of those who have a Le 3 Pro was to support and always be grateful for the work that developers do.