@Acorn: Yeah, the current approach is to kill all the things and restart Nickel on exit (c.f.,
KOReader).
And, no, unfortunately, libinput is not usable on the Kobo, for... reasons. (Mainly, it requires an up to date kernel & userland (mainly, udev), which, much to my dismay, is... *really* not a thing on Kobo ;p).
libevdev does work, on the other hand, but it's much lower level than libinput. (I use it in
KoboUSBMS, although not for touch input, because touch input is hell on Kobo. And, also, I don't need it ^^).
[Given the mess you'll have to parse and make sense of, it's not necessarily a bad thing, though].
tslib, a much older project, can also be coerced into behaving, but it's slightly old-school, and is potentially less amenable (without dirty, dirty hackery at the C level) to the kind of trickery needed to translate the mess that is generated by the various Kobo input devices to something it understands than libinput might have been
.