The META.yml spec defines a "license" field. Module::Build will fill it in automatically if a license is defined in the Build.PL. E.g.: 

name: Object-LocalVars
version: 0.14
author:
  - David A Golden <dagolden@cpan.org>
abstract: |-
  Outside-in objects with local aliasing of $self and object
  variables
license: perl
[snip]

[download]

-xdg

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In reply to Re: license issues by xdg
in thread license issues by szabgab

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