I have installed this ROM. So far, very good. Pixel goodies working. Google Camera too. I installed with the
instructions from lineage os. Used their recovery too which tries to verify to latest lineage os, gives error, but allows the install nonetheless. Excited!
Cool!!!
I did the install pretty easy:
-Unlock bootloader
-fastboot boot twrp-blablabla.img
-adb push proton.zip /
-From twrp menu install the uploaded zip, when flash is done click dalvik wipe.
The only thing i have doubt is relock the bootloader, with official protonaosp is fine but i don't know with unofficial.
I think there are several ways to get it work. Using linux is a bit more complicated because you need to install different packages depending of the linux distribution, sometimes flashing using the .sh stock, you need to edit some lines ...... Ubuntu is too easy, other distributions you need to make some changes in order to getting work.
In my case rom is smooth, i like the green point in the right corner when camera or mic is in use, is an elegant way to resolv to have many icons in the top bar. Using 3 or 2 buttons doesn't work only gestures, ambient display is missing too ..... but it's a great work, developers (lineage, protonaosp, etc....) are doing a incredible job.