It's incredibly long stretches of smooth sailing interspersed by brief intervals of banging my head against the desk.

...which generally isn't nix's fault it's just that fitting the absolute state that is python package management into something sensible is an exercise in futility.

Oh and occasionally I have to doctor around a bit during upgrades because my EFI partition is only 100MB, someone should have warned me. Deleting old generations and windows boot loader language packs and fonts generally does the trick.