[issue273] Ability to remove unneeded packages

[Alexander Balzer at Labix Tracker]

New submission from Alexander Balzer <alexander.balzer at web.de>:

E.g. if you remove a package which requires mono, smart should suggest to remove
mono if mono is not needed by any other installed package.
By this behaviour it is easier to keep the system clean of orphaned packages.
(Aptitude works this way too)

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messages: 1063
nosy: aliB
priority: feature
project: smart
status: unread
title: Ability to remove unneeded packages

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Labix issue tracker <tracker at labix.org>
<http://tracker.labix.org/issue273>
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