* https://plasma-mobile.org/nexus-5/
In the second link you can see a reference to KDE Neon, which is development distro based on Kubuntu.
See also: https://neon.kde.org
> * https://plasma-mobile.org/technology/
This page doesn't mention the OS, afaict.
> * https://plasma-mobile.org/nexus-5/
This page seems to describe installing Plasma Mobile on top of Cyanogenmod, a fork of Android. Neon is mentioned only under "OLD INSTRUCTIONS AND ERRATA (no longer needed)".
See for example: https://kubuntu.org/news/kubuntu-team-launches-plasma-mobile...
https://news.ycombinator.com/item?id=12861481
It turns out it runs Neon, in a container, on top of Cyanogenmod.
You can read more about the approach here:
* https://mer-project.blogspot.ca/2013/04/wayland-utilizing-an...
* https://mer-project.blogspot.ca/2013/04/wayland-utilizing-an...