in reply to Re: Editing files in a module
in thread Editing files in a module

and if you can't submit your improvements to the original module's author or if your modifications dont fit with the intent of the original, rewrite the module in question under a subsequent namespace (making sure to credit the original module and author, especially if you're largely including any of their code).

ie: if the original module was App::Functionality, name your modified module App::Functionality::Extra

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The trouble with having an open mind, of course, is that people will insist on coming along and trying to put things in it.
- Terry Pratchett