I'm not entirely sure I understand what it is you want to do but is there any reason why you are not using builders for your attributes (as in: "has something=>(builder => '_build_something)"?
They are just method names and therefore inheritance works as expected for any other method.

In reply to Re: Problem generating builder functions with Moose for inherited objects by tospo
in thread Problem generating builder functions with Moose for inherited objects by Neighbour

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