vertest.pl

#!/usr/bin/perl

# Requires my ALPM perl module, which will probably break when pacman
# 3.4.0 comes out... unless I have time to hack on ALPM before then.

use warnings;
use strict;
use 5.010;
use ALPM;

*vercmp = *ALPM::Package::vercmp;
my @vers = qw/ 1.9.0 1.10.0 1.11.0 2.0.0 /;
my $last = shift @vers;
while ( defined ( my $next = shift @vers )) {
    my $is = ( vercmp( $last, $next ) < 0 ? q{is} : q{is not} );
    say "$last $is less than $next";
    $last = $next;
}