Dealing with differing extensions

["Sevan / Venture37" <venture37%gmail.com@localhost>]

Hello,
There's a bit of boilerplate code which ends up getting plastered
around for dealing with differing file extensions on various
platforms, for example shared libraries on OS X & other operating
systems (dylib vs so).

What's the best approach for implementing a widget that handle such a
scenario & removes the burden of adding a means of working out the
extension within each package that requires it?


Sevan