Hey! Am I able to flash these things without microG. I think the open source apps (and f-droid) are REALLY cool and the signature spoofing compatibility part would be useful too... But too many things don't work with microG (google voice, Android Lost). What should I put in the config file ( https://github.com/Nanolx/NanoDroid/blob/master/doc/AlterInstallation.md ) so that I just have those things (and whatever else would be useful) and not have things conflict with gApps (I use Nikgapps-R basic on Lineage OS 18.1 for AT&T LG G8 Thinq currently)?
So you want only the additional apps from the NanoDroid image without MicroG?
I'm not sure if this possible with the NanoDroid image (but I must admit that I never tested that)
IMHO you should install these apps via F-Droid and do not use NanoDroid at all (see https://f-droid.org/)
And AFAIK signature spoofing is enabled or not enabled in the installed OS image - that's independent from NanoDroid. It's only required for MicroG so if you don't use it you do not need signature spoofing.
(in LineageOS signature spoofing is disabled).