On Fri, Jun 1, 2012 at 12:47 PM, Marvin Humphrey <mar...@rectangular.com> wrote: > In that vein, I would like to know: do you, as someone who has spent time in > the trenches working with packaging, believe that version numbers and > dependencies are best expressed at the distro level or at the package/module > level?
It depends. There are benefits to module-level dependency specification that I can see: (a) they reflect that *actual* run-time dependency -- a .pm file that is loaded via require/use (which means the .pm file can migrate to a differently named distribution and dependency resolution still works) (b) dependencies can be expressed/enforced in code via "use Foo 1.23" or "Foo->VERSION(1.23)" Thus, they map really well to what the interpreter actually needs to know, whereas distribution-level dependencies have to be managed entirely outside the interpreter with metadata and packaging tools. -- David
