#!/usr/bin/env perl
use 5.010_000;
use strict;
use warnings;

{   package Polygon;
    use Moose;
    use MooseX::ClassAttribute;
    class_has 'sides' => (
        is      => 'rw',
        isa     => 'Int',
        default => sub { 10 },
    );
    __PACKAGE__->meta->make_immutable();
    #MooseX::ClassAttribute::containing_class()->meta()->make_immutable();
    no Moose;
    no MooseX::ClassAttribute;
    1;
}

{   package Triangle;
    use Moose;
    use MooseX::ClassAttribute;
    extends 'Polygon';
    class_has '+sides' => (
        default => sub { 3 },
    );
    __PACKAGE__->meta->make_immutable();
    #MooseX::ClassAttribute::containing_class()->meta()->make_immutable();
    no Moose;
    no MooseX::ClassAttribute;
    1;
}

say {*STDERR} Polygon->sides;       # 10
say {*STDERR} Polygon->new->sides;  # 10

say {*STDERR} Triangle->sides;      # 3
say {*STDERR} Triangle->new->sides; # 3

exit 0;