Comment 4 for bug 1977764

Oh, now I remember why this one was more complicated: it's for the pi *desktop specifically*. Can't add this to ubuntu-raspi-settings directly as that'll pull in zstd, z3fold, and all the zswap stuff on the server images too, which increases the memory burden on the minimal Zero 2 and 3A+ platforms.

So (for my own notes): this requires the creation of a new ubuntu-raspi-settings-desktop package (src:ubuntu-settings) and the addition of that package to the desktop-raspi seed in the ubuntu seed repo.