Test driven development is a must, that's why I think it is necessary to check that there is at least a test for every module specially if you can't know a priori how much will be populated a namespace, for example if you decide to have plugins .

So here it comes a very nice core module called Module::Pluggable ! For sure ti can help a lot !

Read a short explanation ( more code than words :) in
this article .

Compiling Perl on Unix is really straight forward, but on Windows you need to pay some extra effort .

If you want to build a default (a.k.a. Vanilla) Perl distribution on Windows with no pain read the following concise article:

http://perl-node-interface.blogspot.com/2011/04/compile-vanilla-perl-on-windows-with.html