You could try apt pinning.
Putting something like
Code: Select all
Package: *mono*
Pin: version *
Pin-Priority: -1
in a file in /etc/apt/preferences.d should do the trick, I think. See man apt-preferences for how this works.
The Package line will match any package with "mono" in its name (be careful, there may be other packages that have that string in.
The Pin line will match any version of that package.
The Pin-Priority line means never install the matching packages.