Fully Open Source Oneplus 5 without any GApps

[Gaspetaahl]

Hi,
I would like to have a fully open source Oneplus5 ROM without any GApps. I want to use Yalp, microG and magisk (I can get this done).
I liked Freedom OS but it is based on OxygenOS. Is OxygenOS fully open Source? I found their Github page and it seems like it. But I also saw that even Cyanogen / LineageOS has some proprietary software or had at least that could be removed by this tool (https://github.com/nvllsvm/freecyngn).
FreedomOS also has a gitlab page with the Code but are their proprietary parts in it?
Should I prefer a ROM based on AOSP?
Thank you for your help

 

[Neil_Armstrong_]

You should go on Liquid Remix, I'm fine with MicroG

 

[xabierd]

I use omnirom oreo with microg. Before i was on lineageos with microg bundled https://lineage.microg.org

 

[Hugo9191]

I'm currently using the microG "official" fork of LineageOS 14.1, but I'm considering changing to either 15.1 or an Oreo rom with Signature spoofing.

Honestly I considered learning that myself, I'd like to keep using Lineage, but I do need the microG integration.

 

[Ivy123]

I'm using Carbonrom with integrated signature spoofing and it's the fastest Rom I've ever had, but I'm also curios about oxygen based open source ROM without anyone gapps using it microg instead.
Did anybody try with freedomos?

 

[Hugo9191]

I'm using Carbonrom with integrated signature spoofing and it's the fastest Rom I've ever had, but I'm also curios about oxygen based open source ROM without anyone gapps using it microg instead.
Did anybody try with freedomos?

Anything OOS based needs GApps to work, I remember reading that somewhere.