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On Fri, 07 Nov 2014 20:57:41 +0100 |
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Jauhien Piatlicki <jauhien@g.o> wrote: |
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> What;s wrong with input? PMS itself or how do maintainers write |
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> ebuilds? Could you explain? |
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A mixture of both. Gentoo developers like writing eclasses that write |
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unnecessarily clever, highly messy and technically incorrect dependency |
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strings (see how Perl and Ruby are done, for prime examples). Doing |
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this kind of thing well requires support from PMS, so developers can |
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express what they want to say directly rather than via some convoluted |
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mess of nested ||s, []s, slot abuse and faked range dependencies. |
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However, it's currently culturally more acceptable to try to make |
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yourself look clever by writing the new "world's most convoluted family |
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of eclasses", so developers aren't asking for the features they need. |
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In a way, this brings us back to SAT and CNF. Although you *can* encode |
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this kind of thing in SAT (or rather, in QSAT...), the encoding is |
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utterly opaque and doesn't lend itself to a good algorithm. The |
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dependencies some developers are writing are nearly as bad. |
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-- |
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Ciaran McCreesh |
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