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On 06/17/2012 10:31 PM, Michał Górny wrote: |
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> Hello, |
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> |
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> A simple solution to a program long-unsolved. In GLEP form. |
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> |
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> Both attached and published as a gist: |
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> |
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> https://gist.github.com/2945569 |
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> |
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> (please note that github doesn't render GLEP headers correctly) |
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> |
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As already stated I like this idea, because I already got some optional |
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dep bloat in x11-misc/spacefm and media-sound/gmusicbrowser. |
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However I have a few objections: |
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1. Optional deps are SUGGESTIONS from the dev which he considered |
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nice/good/sane at the time of writing the ebuild. Other people might |
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totally disagree with those suggestions. |
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As useflags in IUSE_RUNTIME can pick from global useflags as well or |
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even set "+foo" the user might have a hard time to turn off things he |
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does not want without turning them off for regular IUSE as well. |
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Means: "foo" pulls in an optional dependency for package suckbar/gaybar, |
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but it also pulls in build-time deps for nerdbar/geekbar |
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The user has to figure out now what the useflag does for each package |
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and micromanage useflags to maybe avoid undesired optional deps. |
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FEATURES="optional-deps" would be one way to overcome this, so I can |
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globally turn useflags in IUSE_RUNTIME off without those in regular IUSE. |
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But that may cause problems with REQUIRED_USE then maybe, not sure. |
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2. Afais useflags that are already in IUSE and used for build-time stuff |
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must not be used for IUSE_RUNTIME too. |
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This is a random rule IMO. I don't have many cases in mind where this |
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would be annoying (could think of "debug" enabling some in-source |
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switches and adding optional debug tools in RDEPEND. Having one flag |
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here would make it cleaner and tighter for the user to interact with |
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useflags.). |
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However... this is not a logical rule, rather a technical issue. If |
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there is a way to avoid this restriction that would be nice. |
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(There was one proposal about expanding useflags in IUSE_RUNTIME, but I |
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have not thought far in that direction.) |
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3. There are no unconditional optional deps possible. |
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ssuominen had an example: |
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"virtualx.eclass could have suggestion/recommendation to enable USE=xvfb |
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in x11-base/xorg-server" |
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and some things I forgot... |
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