I am attempting to install svmono in LyX 2.3.2 (2018-12-08) running texlive on Debian 10, with desperate lack of success.

I copied the svmono directory in all kinds of possible places based upon inet 'suggestions', noone works.

Still Lyx cannot find the svmono.cls file (and the others in the directory, I presume).

Anyone knows how to install svmono in Lyx?

Thank you.