I actually like the assurance of immutability. The main downside is that there’s just less documentation on how to do things, since it’s a very non-standard configuration for a distro.

It’s also annoying having to reboot every time I layer a new package into the system image, but I try to avoid that as much as possible and haven’t had to do it recently.

Adjusting to Flatpaks has also presented some challenges. In theory, I really like what Flatpaks offer in terms of app-level isolation, but some things are still rough around the edges. I’ve encountered at least one app that didn’t obey the system’s dark mode theming… Also, they still haven’t quite figured out a good way to handle GPU drivers, so you can run into compatibility issues between the usage driver in the runtime and the kernel driver in the system image.

In my case, I’ve just had to update and restart the application when this happens, but it might cause problems if you try to roll back the OS image after already updating all your runtimes (resulting in a newer userspace driver trying to talk to an outdated kernel driver).