When I booted it up, I checked the most recent entry in pacman's logs:
$ tail /var/log/pacman.log -n1
[2018-08-24 12:40] [PACMAN] Running 'pacman -R aur/ino'
Somehow the upgrade didn't completely hose everything. It just took a bit of finagling in the form of looking through any packages that gave errors (errors like cyclic dependency stuff and conflicts from bad use of pip) and uninstalling those that I didn't see a need for or switching them to the package manager instead of pip. About an hour of babysitting it and I had a completely updated and working Arch setup.Using it was surprisingly pleasant, I think the most painful thing was initial builds for some large Haskell projects were slow but subsequent builds were tolerable. Also the original screen, while nicely visible with the matte surface, has a painfully low resolution of 1366x768 and so few websites are happy with half of that width now that everything has huge margins.
Probably the most important thing was that it was mine (even though I haven't done the sorts of mods in TFA) in a way that my work laptop and the windows machines I'd been using outside of work could never be.
(I do love how sturdy it is. Especially with the slice battery that almost doubles the thickness and gives it enough juice for hours)