How to install niri-wm (with DankLinux) on Pop!_OS ?

I'm running Pop!_OS 24.04 LTS with Cosmic DE and I want to try Niri-WM. Niri suggest using it with DankMaterialShell (DMS) for an out-of-the-box experience.

I've tried following the installation instructions for DMS, using both Debian Sid and Ubuntu. But either aren't fully correct of course. And after adding the repositories `sudo apt install dms` says: `Unable to locate package dms`.

Is there a way to do this properly? Or should I just give up and use a DMS sanctioned Distro?