I recently discovered Test::Distribution, it holds some of the stuff I need. According to the POD - a MANIFEST integration tests was a wanted feature.
Having fooled around with the one in ExtUtils::Manifest, I knew where I could find one, so I implemented it in Test::Distribution (there was a stub) and mailed the author my patch.
I feel bad not writing tests and POD to accompany the patch, but I have not had many of my patches accepted, so I guess I did not want to put too much work in it - lazy programmer, no cookie :-/
