Err, libevdev is just...
fdo's libevdev?
I was going to say I'm pretty sure that anything I build that depends on it (e.g., evemu/evtest) is linking to it statically, but, hey, that's no longer true, so it is in fact in KoboStuff.
And, no, it's not KFMon that restarts Nickel, it's KOReader (c.f., what I linked to in my previous answer, specifically the koreader.sh -> nickel.sh interaction).