this post was submitted on 01 Nov 2024
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Immutable is fantastic in theory. Where it falls apart is having to basically rebuild the whole distro every time you want to make a change. It should be there your base distro is immutable, then any extra changes go on an additional mutable layer but that would be difficult to set up. (You'd need a package manager like Nixos or something.)
That is exactly how OsTree and other layering solutions work. Only Nix requires a whole distro rebuild.
And even then with
nixos-rebuild switchyou won't really notice that you're "rebuilding" anythingIt isn't, though. Package layering modifies the install itself. See: https://docs.fedoraproject.org/en-US/fedora-silverblue/getting-started/#_flatpak_command_line
The big problem with the way ostree works is that installing things has side effects. Every item you install with ostree makes all future items slower to install, including regular os updates. This is a significant flaw in the way they designed it and really makes immutable oses less attractive.
It's not a flaw. Ostree is a last resort, you should be using containerized software. Layering a package should only be done when strictly necessary and not as the regular way to manage packages. If you need an overtly customized system, you use Nix or universal blue to design your new system declaratively and create your custom image.
That is a flaw. Flatpak is great where it works but Flatpak doesn't solve all problems, neither does any one solution except os level modification. It can be a last resort by it should be a last resort that works. The layering system could be put together such that you don't get side effects of installing packages like that. It might be tough to fix but that doesn't make it not a flaw.
Please remember that no one is taking anything away from you. If you don't like it, you don't have to use it. Traditional package managing isn't going away any time soon. You are safe. Others can have their preferred tech, and you don't have to like it. It's ok to have different tastes.