I'll write it in a new reply so those subscribed would be notified, also directly tagging @Lollauser
and @Legitimate_ process 99
because you both replied about the issue directly too.
After... Jesus, more than 2 hours of flashing, different versions and combinations almost giving up, it has to do with Google Search and/or Assistant. NikGapps version doesn't seem to matter (test with the current one from the 18th, 1st and two canary builds, 21st Jan and 11th Jan), if any (or both) of those are enabled in the configuration script a bootloop would ensue.
I don't really know if the other settings I chose played some part in it, but in the end the configuration script was the same I attached before, only with those mfks disabled. I went ahead and disabled the backup (and restore) functionality from the ROM installation script during testing so each time I flashed it, it was clean, otherwise if any GApps addon.d scripts were present they would be triggered.
Oh! By the way, from time to time I encountered that "not enough space" @Lollauser
mentioned concerning the permissions file for one time initializer in /system_ext, which I could only get around by flashing the original super from Courbet global and starting anew... There ought to be a better way, that's like killing files with a cannon, but I didn't really have the time to delve into it right now, and he needed the phone as soon as possible too haha.
So yeah.. installation-wise this is tested to be working:
- Boot to ygherna's recovery (link in OP, version 3.7.0), perhaps it could also be done through SHRP's since we're not interested in decrypting data, but hey.
- Flash crDroid, build from the 16th of Feb 2023.
- Flash NikGapps, build from 18th of Feb 2023, script attached here for convenience in case someone gets to this part and wants it.
- Format data / factory reset, could be done directly from ygherna's recovery or using crDroid's (it's inside the ROM zip, not used or flashed).
- Reboot to system.
If Google Search is needed or required it can surely be installed afterwards through the store.