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On 21/07/14 21:03, Jeroen Roovers wrote: |
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> On Mon, 21 Jul 2014 13:23:46 +0900 |
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> Thomas Kahle <tomka@g.o> wrote: |
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> |
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>> the OCR software tesseract has many different plugins for |
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>> language packs used for OCR for different languages. The ebuild |
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>> uses the LINGUAS variable to pass the choice of which packages to |
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>> install to the user. |
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> |
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> Every ebuild uses LINGUAS implicitly. What you mean is that you |
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> expand LINGUAS to USE Flags... |
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Yes, I did not use the correct terminology. |
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>> A reverse dependency is app-text/pdfsandwich which roughly puts |
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>> OCR'ed text in a scanned pdf. Since it uses tesseract it |
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>> supports exactly those languages that tesseract supports. |
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>> |
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>> Should its ebuild have LINGUAS use flags and then depend on |
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>> tesseract with at least those flags set? |
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> |
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> ... in which case you can simply use USE dependencies since you have |
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> USE-expanded flags matching LINGUAS. It should be easy to match one |
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> ebuild's IUSE with another's. |
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> |
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> linguas_tlh? ( app-text/tesseract[linguas_tlh] ) |
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I know how to specify USE dependcies. |
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Since you deleted it, let me ask my question again: If I follow |
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this method I will have 37 dependencies all of this form. This |
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is pointless because |
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a) Everytime tesseract gains or loses a language support (it does |
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happen!) the pdfsandwich ebuild needs to be updated, |
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b) Nobody wants to set different linguas on tesseract and |
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pdfsandwich anyway. |
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Cheers, |
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Thomas |
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-- |
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Thomas Kahle |
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http://dev.gentoo.org/~tomka/ |
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