Problem: I do this too seldom to remember it without a note like this page
Find a module that you want on the net. Check that that module is not
already packaged by Debian. In the examples below I use the module
File::Slurp
(see this article).
$ dpkg -l "lib*perl" | grep lurp
$ dh-make-perl --install --cpan File::Slurp
That will create the .deb in the current directory. Install with dpkg
and enjoy!