#!/usr/bin/perl 
package My::Config;

use Moose;
with 'MooseX::SimpleConfig';

has filename   =>  ( is  => 'ro', isa => 'Str', required => 1, );

has '+configfile' => (
    default => sub { my $self = shift; '/some/path/' . $self->filename . ".yaml"; },
    lazy    => 1,
);

my $config = My::Config->new_with_config( filename => "config");