How do I choose a package name for a custom Perl module that does not collide with builtin or CPAN packages names?

Question

I have read the perldoc on modules, but I don\'t see a recommendation on naming a package so it won\'t collide with builtin or CPAN module/package names.

In the past

Answer 1

The @INC variable contains a list of directories to in which to look for modules. It starts with the first entry and then moves on to next if it doesn't find the request module. @INC has a default value that created when perl is compiled, but you can can change it with the PERL5LIB environment variable, the lib pragma, and directly manipulating the @INC array in a BEGIN block:

#!/usr/bin/perl

BEGIN {
    @INC = (); #no modules can be found
}

use strict; #error: Can't locate strict.pm in @INC (@INC contains:)