Thanks for the clarification! We actually run very similar systems; I’m on the hardened Bluefin-dx image as per secureblue.
Regarding Steam, Bazzite -one of Bluefin’s uBlue siblings- actually switched over to RPM Fusion’s Steam due to issues with the Flatpak. EDIT: The former is false. The Deck images have always been on RPM Steam. Only the Desktop images moved to RPM Steam (from Distrobox-Arch) for support consistency reasons. Appreciation goes out to quarterlife@lemmy.sdf.org for correcting me!
I don’t know what exactly is the way to go for you. But I can suggest the following possibilities (from own experience):
- Install RPM Fusion’s Steam through layering with
rpm-ostree
. - Use Steam bundled with Bazzite- Arch; this is what Bazzite used to use in the past.
- Or (very unconventional) use the Steam bundled with Conty.
Bazzite lead developer here, we actually never used the flatpak. Our first release had it installed in a distrobox container on the desktop images. Deck images always had RPM Steam because Steam is essentially functioning as a desktop environment there. We moved them both to be RPM for support consistency reasons.