@davidfor: Thanks for asking!
I'll double-check if that blacklist is hard-coded, or if we can get away with using .kobo-adds or something

.
EDIT: Yup, hard-coded. .kobo/addons it is, then (which does work, and is properly ignored).
Off to fix my rpaths, then

.
----
Yep, makes sense, that's what the behavior implied, but good to know it's by design

.