You are correct the syntax for the code you posted needs the class followed by roles. I initially misread Point as a Role. I tend to put all of the appended roles in a list form though just to improve readability (even if there is just one). Also if you don't like the method call on a method result you can separate them into two and the required=>1, elements of the attributes still won't error.

my $named_point_class = with_traits( 
   'Point',
   (
    'Named',
   ),
);
my $point_instance = $named_point_class->new(
   x => 1,
   y => 1,
   name => 'my_point', 
);

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Update:If you are using this in boilerplate the role can be a dummy name as well and it still works!

In reply to Re^3: Moose composing role with required attribute into existing instance by jandrew
in thread Moose composing role with required attribute into existing instance by tj_thompson

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