Bug#972703: gnome-boxes does not start, undefined symbol libusb_set_option

[Carnë Draug]

Hi Simon

This is embarassing but I found now what was the issue.  There is one
package that I installed some months ago that was not from Debian
repos and for some reason it installs /lib/libusb.  It's not even a
deb file which is why dpkg-query does not know about it.

The package in question is xiAPI, from ximea, a company for microscope
cameras https://www.ximea.com/support/wiki/apis/xiAPI .  Without the
whole working from home thing, I would have never have installed on my
computer.

I'm very sorry for the noise.  Thank you for the help, it was the
process of answering your questions, and searching for other libs that
dpkg did not know about, that made me remember this.

David