Daydream compatible Unity versions?

I was wondering if Unity 5.4.2f2-GVR12 was the ONLY version which worked for Google Daydream.

I tried with Unity 5.4.3f1and I imported the files from the "compatibility-without-gvr-integration" package, but still I had issues like "GVrController cannot be found". So, I added the "HAS_GOOGLE_VR" definition and everything seemed to work fine.

Until I built. At that point I get several errors about the manifest.

I am perfectly fine with having 2 versions of Unity at the moment (and I know that they are gonna add Daydream native support in 5.4.6) but does anybody know any trick to make it work on newer versions of Unity?

Thanks in advance!