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On Tue, 2005-03-29 at 12:15 +0200, Fabian Zeindl wrote: |
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> Hello |
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> |
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> There was a discussion on the gentoo-user-de list about this two |
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> Useflags: gtk and gtk2. Because not everybody is sure what the mean, so |
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> if you have -gtk +gtk2 some think that gtk2 should be installed and soon. |
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> |
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> Wouldn't it be better if "gtk" meaned that the newest available gtk |
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> version ist installed (gtk1 or gtk2) and a flag like oldgtk take the |
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> older version gtk1. |
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> |
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> Another question which occured: Is there a performancedrawback if a |
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> program is compile with gtk1 AND gtk2 build in? Does this happen when |
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> someone installs with +gtk +gtk2? |
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Common misconception, it tends to crop up once every 6 months or so |
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since I ever was foolish enough not to stomp a hard policy and beat the |
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people who want gtk+-1.2 support with a sledgehammer. |
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Okay. Here's the deal and the logic: |
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USE="gtk" |
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I want gtk support. Legacy. classic. Doesn't matter if the version |
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is gtk+-1.2 or 2.0. ( When it was introduced, there was only gtk+-1.2, |
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and that was it) |
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Then came a few, troublesome beasts and started to make our days |
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annoying. Mozilla was one of them, gFtp another. Enough of them |
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cropped up that used -both- gtk+-1.2 and gtk+-2 interfaces _AS A |
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TRANSITION PERIOD_ |
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The gtk+-1.2 interfaces were planned to be deprecated when the new and |
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shiney(!) interfaces were usable, and have so been done. |
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The gtk2 USE flag came up for -only- theese packages. Nothing else. |
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Its a mistake, abusing the redundancy that boolean nested flags work |
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with, however, I was young, naive, and expected people to be able to |
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comprehend written instructions and nested logic blocks. |
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DEPEND="gtk? ( |
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gtk2? ( >=x11-libs/gtk+-2.0 ) |
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!gtk2? ( =x11-libs/gtk+-1.2* )) |
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!gtk? ( sys-libs/ncurses )" |
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is obvious and fairly logical in my mind, and is the code that describes |
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what the gtk2 USE flag is for. |
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Along with the following descriptions: |
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gtk - Adds support for x11-libs/gtk+ (The GIMP Toolkit) |
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gtk2 - Use gtk+-2.0.0 over gtk+-1.2 in cases where a program supports |
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both. |
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If someone can suggest a better formulation for this, please go ahead. |
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Lets face it, gtk+-1.2 is _deprecated_ and all packages that use it |
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should either be taken out and shot in the head, ( for mercy's sake, |
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that and utf8 ) or updated to track the new and maintained library |
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API. |
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We all know this isn't feasible, most projects are just recently wiping |
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stale code for interfaces ( Hi mozilla! ) and as such, the mistake is |
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left to stay. |
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-Changing- existing logic is -not- going to solve this solution |
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cleanly. We suggested to remove the gtk2 flag, (make it default) and |
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implement : |
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USE="shoot-me-in-the-head-with-deprecated-libraries-please" instead, |
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however people considered it as offending our users for some reason. |
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As for the discussion of USE="-gtk +gtk2" : |
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there is one case where this could be a acceptable and will produce |
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expected results. That is when there is only a gtk+ interface, no |
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alternative ( ergo, the -gtk is ignored ) and there is a choice between |
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gtk+-1.2 or 2.0 (the gtk2 selection flag) However, this is such a |
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corner case only because the "gtk" flag is completely ignored. |
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//Spider |
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-- |
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begin .signature |
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Tortured users / Laughing in pain |
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See Microsoft KB Article Q265230 for more information. |
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end |
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