Thanks :), but as I said:

> If you already have a LineageOS-supported device, you can grab a prebuilt LineageOS+MicroG image from the MicroG site.

I redacted a lengthy part of my comment since I felt it wouldn't add anything to the discussion; but it went like this: Sadly, my device (HTC 10 aka pme) is officially only on LineageOS 14.x, which is Android 7. Since I am coming from Android 8 stock ROM, I'd like to stay on Android 8 or even get Android 9. There are unofficial LineageOS builds for this (from a guy who just doesn't merge the back to LOS; which I can understand considering the additional effort - on top of all the work is already doing). But of course they lack the necessary patches for MicroG. And the MicroG only pre-builts are based on the official LineageOS build process and thus the official images. So I can only get Android 7 + MicroG with the comfortable "grab image and flash"-method.

I gave building a custom MicroG+LOS{15.1,16.0} a shot using the official MicroG docker image (just a single docker run command) and adding the unofficial builds local_manifest.xml, but those two builds failed for me and I didn't bother messing around with that docker c*. Accidentally, I did that the day before this was posted to HN, no changes since then. But I suppose I'll try a docker-less build on my machine once I feel like it.

Eventually I can just put MicroG on the unofficial build from xda-devs, since that doesn't contain GApps; but I am not sure how great the experience is when not having the MicroG/F-Droid patches. I will see.

EDIT: Regarding signature spoofing, the MicroG github wiki says:

> You can also patch your already-install ROM by flashing NanoDroid-patcher, without any computer interaction. It will auto-patch every updated ROM.

So maybe that works.

Ahh sorry, I missed that.

What may be easiest for you is actually to use Xposed. I think that can allow the signature spoofing needed for MicroG.

I used NanoDroid - worked quite well :) I'd still prefer to build a LOS with MicroG integrated, but it's difficult to get the required information from the folks at xda-dev...