That's what I use too on Bazzite, custom image for system level stuff, and home-manager for user-level stuff. The nice thing about Fedora Silverblue's model is

That's what I use too on Bazzite, custom image for system level stuff, and home-manager for user-level stuff. The nice thing about Fedora Silverblue's model is that it is literally a container image, so to "build" your image you can run any arbitrary commands, so it's way simpler than nix.