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<config dir="/usr/local/etc" log="/usr/local/log">
  <user id="user1">
      <group>root</group>
...
      <group>staff</group>
  </user>
</config>

{ 'dir' => '/usr/local/etc',
  'log' => '/usr/local/log',
...
             'user2' => {'group' => 'staff'}
            }
};