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On Thursday 25 September 2008 17:51:42 Hilco Wijbenga wrote: |
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> On Thu, Sep 25, 2008 at 03:27, Daniel Pielmeier |
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> |
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> <daniel.pielmeier@××××××××××.com> wrote: |
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> > Also make sure you have a clean world file, which means if there is an |
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> > entry which is already needed by something else it should normally be |
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> > removed as this could cause problems. |
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> |
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> I can understand that if I have both package P and dependency D in |
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> world, and I remove P then depclean will not remove D. I assume that's |
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> not what you're talking about, though, as it's harmless and probably |
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> intended (since I listed D in world). |
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> |
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> Moreover, I would think this is quite common. You might have |
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> Java/Perl/Python/Ruby/* explicitely listed in world (because you write |
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> programs/scripts) and several packages that are either |
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> Java/Perl/Python/Ruby/* based or provide bindings. I *want* to be |
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> explicit here as I don't want Java/Perl/Python/Ruby/* removed should I |
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> remove those other packages. |
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> |
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> So what kind of problems are we talking about? |
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Most probably the "problem" that arises is when a mere dep cannot be removed |
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by --depclean anymore because it is in world. It is a problem because of the |
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unnecessary clutter it creates. |
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Also, sometimes deps come and go, and libs get split into two packages. Say |
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you have libA which is a dep of some package Z. The dev sees that libA can |
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benefit from USE flags in some way and this in turn benefits package Z. So |
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libA gets split into libAa and libAb, both of which block the old libA. |
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Package Z can install libAa or libAb or both depending on USE. If the user |
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put the old libA in world (incorrectly), portage will not uninstall it to |
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replace it with the new split libA. Instead it will display the blockers, |
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which has to be resolved manually - and we all know how much mass hysteria |
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and confusion blockers seem to cause amongst users... |
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This of course is the exact opposite of what you describe above |
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-- |
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alan dot mckinnon at gmail dot com |
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