thanks! i should've checked (better) before!
also, a few tips i used to get it working, maybe they'll be useful to someone

1. i extracted the deb archive in a folder, let's name it $folder (in my case, /opt/man)

2. i added $folder/usr/bin and $folder/usr/sbin in my $PATH

3. i symlinked $folder/usr/lib/man-db/man to $folder/usr/bin/man

4. i added $folder/usr/share/man in my $MANPATH

(i did everything using inception, but i think that it should be possible with devel-su too)