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On 01/20/2015 07:46 AM, Andreas K. Huettel wrote: |
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> Am Dienstag 20 Januar 2015, 08:57:43 schrieb Michał Górny: |
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>> So a package supporting both providers has: |
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>> |
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>> IUSE="ffmpeg libav" |
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>> RDEPEND=" |
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>> ffmpeg? ( media-video/ffmpeg:= ) |
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>> libav? ( media-video/libav:= [media-libs/libpostproc:=] )" |
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>> REQUIRED_USE="^^ ( ffmpeg libav )" |
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>> |
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>> And a package with optional support for both ends up like: |
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>> |
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>> IUSE="avcodec postproc ffmpeg libav" |
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>> RDEPEND=" |
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>> avcodec? ( |
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>> ffmpeg? ( media-video/ffmpeg:= ) |
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>> libav? ( media-video/libav:= ) |
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>> ) |
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>> postproc? ( |
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>> ffmpeg? ( media-video/ffmpeg:= ) |
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>> libav? ( media-libs/libpostproc:= ) |
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>> )" |
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>> REQUIRED_USE=" |
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>> avcodec? ( ^^ ( ffmpeg libav ) ) |
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>> postproc? ( ^^ ( ffmpeg libav ) ) |
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>> ffmpeg? ( || ( avcodec postproc ) ) |
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>> libav? ( || ( avcodec postproc ) )" |
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>> |
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> No. |
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> |
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As a user, I completely agree with Andreas. What's wrong with a |
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dependency on virtual/ffmpeg? Let's say I want to install mpv; if I |
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completely ignore the upstream's recommendation of ffmpeg and instead |
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use libav to satisfy a virtual/ffmpeg dependency, that's my problem, not |
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the Gentoo developers (in my opinion). |
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I've written a few ebuilds, and by no means am even close to competent. |
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If they get more and more complex like this, why should I even bother |
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ever learning? I feel like ebuilds should be as simple as possible, to |
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keep devs sane and to interest more people. Another downside is that a |
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much more verbose solution like this will make dependency resolution |
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take longer imnho. |
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Alec |
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