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.
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.