I actually doubt it would be that easy to do with Getopt::Declare. The reason is that the actions are done in the caller's namespace - and G::D is not going to know which namespace is which. Worse, it looks like these actions will affect only package variables. They aren't proper closures, and I need closures to affect the proper private variables. I'm sure it could still be faked somehow, but it would not be the straight-forward method you may think it is.

Besides, once you have a wrapper, it really doesn't matter which one it wraps, as long as the caller(s) don't need to change. ;-)

(Also, it's imperative for my app, anyway, that all parms are parsed in a certain order, irrespective of the order on the commandline, which is also contrary to G::D's method. So my wrapper just gets G::L to parse the whole thing, and then we validate in order.)