Adding to what haukex wrote, you could get the version of the module from the command line, if you wrap command line processing into a BEGIN block:

use strict; use warnings;
my %options;
BEGIN {
    use Getopt::Std;
    getopt('v', \%options);
    die "invalid value for -v switch\n"
        if ($options{v} !~ /^(?:7|8)$/);
    my $path = "/path/for/v$options{v}/lib/perl5";
    unshift @INC, $path;
}   
use Infoblox; # /path/for/v$options{v}/lib/perl5 will be searched firs
+t
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