Bazzite is an alternative operating system for the Steam Deck and for Desktop PCs that closely emulates SteamOS, with numerous additional features and improvements on top. We use immutable Fedora as a base, and allow packages to be layered and kept through updates unlike stock SteamOS. You can even print and change the language from English if you want.
Screenshots are on the GitHub, https://bazzite.gg/
There’s a KDE and GNOME version, the deck release has gamemode and Valve’s KDE themes/similar themes for GNOME. It’s functionally identical.
The installer will even offer to set up EmuDeck and Decky Loader for you.
Thanks. I looked on the repo but I guess not closely enough. This seems like a really interesting project. It’s too new for me to be comfortable installing on my deck but I’m definitely going to keep and eye on this.