I'm working on a project that needs to access @ARGV before anything else does. I figured I'd add a subroutine that checks for potential conflicts and issues a warning if any of the more popular modules that access/modify @ARGV are loaded at the time my module is imported.

I know that it isn't feasible to list/check all potentially conflicting modules (see @conflicts below). Nevertheless, I'd like to come up with a decent list of popular/commonly used modules that touch @ARGV. What are your favorites?

This code identifies modules loaded both directly and indirectly (i.e., as dependencies). It works fine and I'm not asking for help with it (but I certainly won't turn away any comments/suggestions):

use Module::Loaded;
sub _check_for_conflicts {
    my @conflicts
        = qw(AppConfig Getopt::Args Getopt::Long Getopt::Simple Getopt
+::Std);

    my @loaded;
    for (@conflicts) {
        push @loaded, $_ if defined is_loaded($_);
    }

    if ( scalar @loaded > 0 ) {
        print STDERR <<EOF;

WARNING:
A module that accesses '\@ARGV' has been loaded before Log::Reproducib
+le.
To avoid potential conflicts, we recommended changing your script such
that Log::Reproducible is imported before the following module(s):

EOF
        print STDERR "    $_\n" for sort @loaded;
        print STDERR "\n";
    }
}
[download]

Thanks all!