Bug / feature / idiot user?

I've finally buckled to peer pressure and adopted Moose. So far I / 
really/ like it. Thanks.

I'm having a problem that may well just be me doing something silly.  
Given the following:

     $ cat Configurable.pm
     package Configurable;

     use Moose::Role;
     use Configuration;

     has 'config' => (
       handles  => ['option'],
       default  => sub { Configuration->new },
     );

     #sub option { 'fake' }

     1;

     $ cat Configuration.pm
     package Configuration;

     use Moose;

     sub option { 'option value' }

     1;

     $ cat Loggable.pm
     package Loggable;

     use Moose::Role;

     requires 'option';

     sub log { print 'Option is ', shift->option, "\n" }

     1;

     $ cat Thing.pm
     package Thing;

     use Moose;

     with 'Configurable', 'Loggable';

     sub run { shift->log }

     1;

I get this:

     $ perl -MThing -e 'Thing->new->run'
     'Configurable|Loggable' requires the method 'option' to be  
implemented by 'Thing' at /alt/local/lib/perl5/site_perl/5.10.0/Moose/ 
Meta/Role/Application.pm line 59
      
Moose 
::Meta 
::Role 
::Application 
::apply('Moose::Meta::Role::Application::ToClass=HASH(0x854b5f8)',  
'Moose::Meta::Role::Composite=HASH(0x84be570)',  
'Moose::Meta::Class=HASH(0x84b8dc0)') called at /alt/local/lib/perl5/ 
site_perl/5.10.0/Moose/Meta/Role/Application/ToClass.pm line 17
      
Moose 
::Meta 
::Role 
::Application 
::ToClass 
::apply('Moose::Meta::Role::Application::ToClass=HASH(0x854b5f8)',  
'Moose::Meta::Role::Composite=HASH(0x84be570)',  
'Moose::Meta::Class=HASH(0x84b8dc0)') called at /alt/local/lib/perl5/ 
site_perl/5.10.0/Moose/Meta/Role.pm line 447
      
Moose 
::Meta::Role::apply('Moose::Meta::Role::Composite=HASH(0x84be570)',  
'Moose::Meta::Class=HASH(0x84b8dc0)') called at /alt/local/lib/perl5/ 
site_perl/5.10.0/Moose/Util.pm line 96
      
Moose::Util::apply_all_roles('Moose::Meta::Class=HASH(0x84b8dc0)',  
'Configurable', 'Loggable') called at /alt/local/lib/perl5/site_perl/ 
5.10.0/Moose.pm line 70
     Moose::with('Thing', 'Configurable', 'Loggable') called at /alt/ 
local/lib/perl5/site_perl/5.10.0/Moose/Exporter.pm line 192
     Moose::with('Configurable', 'Loggable') called at Thing.pm line 5
     require Thing.pm called at -e line 0
     main::BEGIN() called at Thing.pm line 0
     eval {...} called at Thing.pm line 0
     Compilation failed in require.
     BEGIN failed--compilation aborted.

If I uncomment the implementation of C<option> in Configurable.pm it  
works
just fine - and delegates correctly to the C<option> in  
Configuration.pm.

If I comment out the 'requires' in Loggable it also works fine.

So I guess the combination of delegation and role composition puts the
implementation of C<option> out of reach to requires?

Am I doing something silly?

-- 
Andy Armstrong, Hexten