Ubuntu used a patch for this, but it's just a work-around for now and multiple upstream's developers told me that is not the right approach to use. -- debbug#555134 ...
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ID Status▲ Resolution Sev Product Comp Assignee▲ Reporter Summary
43797 CLOS DUPL nor Simply L bugs sem alexvk72 Не работает команда apt-get dedup

File a new bug in the "bugs" component of the "Simply Linux" product