immutable-setup VS ublue

I was figuring that out too a few months ago, it is very intuitive. I created a repo with install scripts (rebasing off uBlue is a must) https://github.com/john-ghatas/silverblue-setup. Going off what @zuvy said, distrobox is also a good shout, if you use the github version instead of the repo version (clone the repo and run sudo ./install) to compose your containers you can have them ready to go in a declarative language in combination with container images.

I myself use Fedora Silverblue with a https://ublue.it/ -based custom image, and I use home-manager for shell configuration. Sure, my GNOME layout isn't declarative, but basically everything else is. Pair that with one of the best NVIDIA driver experiences and the strong feeling of stability, it's better than most other Linuxes rn.

Take a look at ublue.it

This is a fundamental misunderstanding of immutable systems. You still have full control over what’s on your computer, you just don’t exercise that control by making irreversible changes to your core system while it’s running. You can use e.g. rpm-ostree, or even better, build a custom image with exactly the changes you want that updates and ships directly to your computer whenever you want it to.

Have you considered the Sericea(Sway) immutable Fedora spin at ublue.it?

Have you considered the nvidia images at ublue.it? They make silverblue and nvidia easy.

Try the ublue images, they have one for deepin. It’s a variant on fedoras immutable silverblue image, you could either use their iso on http://ublue.it or install silverblue and rebase to the deepin image via:

ublue.it

This is indeed a blind spot. Thanks for pointing that out! Silverblue -to my knowledge- doesn't do a lot to address this. Though, 3rd-party tools like Home Manager and the suite of applications developed by the folks over at uBlue might be able to limit this to a minimum. Though I'm not sure if it surpasses NixOS in this regard; for the uninitiated. Though, to my knowledge, this requires special attention and depends on the specifics of the NixOS system in question.

This hasn't been for nought as even openSUSE's Aeon (and all their immutable offerings) ship Distrobox instead. Vanilla OS also ships Distrobox instead of Toolbx. Heck, even the folks over on uBlue\1]) always mention Toolbx with Distrobox and vice versa. And it wouldn't surprise me if most of them prefer to use Distrobox instead.