Looking for help with this package that is failing to build in my project.
File-Copy is a core module. You don’t need to request it in order to get it.
Requesting core modules at specific versions has some risks. The module may not be available as dual-lifed, and it may not be compatible with Perl at a different version number.
Feature suggestion: let the system report such incompatibilities at the time they’re specified. I ran into this problem, too, simply because I didn’t know that File-Copy is a core module. I don’t really care which version I get, because I’m willing to take the chance that the current version has the basic functionality I need.