tools and work flows for developing collections of distributions

module-authors:

I use h2xs, ExtUtils::MakeMaker, and make(1) on Unix-like platforms for 
developing modules and collecting them together into a distribution.


I now have several distributions and would like to collect them together 
into a unit (Bundle?), so that I can develop and test them together -- 
e.g. ensure that changing one distribution does not break another 
distribution.


Are there Perl tools and/or work flows to support this?


TIA,

David

p.s. Where can I find documentation that explains Bundles and how to 
create them?