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How does emerge selects package to install?
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creaker
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PostPosted: Thu Aug 29, 2013 7:33 pm    Post subject: How does emerge selects package to install? Reply with quote

Currently I have three ebuilds under kde-base/kdelibs:
4.10.5-r1
4.11.0-r1
4.11.0
On emerge -pv kdelibs I getting a message that the 4.10.5-r1 will be installed.
Why it is not a 4.11.0 or 4.11.0-r1? Does emerge installs the oldest of available packages or it is selected for some other reasons?
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eccerr0r
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PostPosted: Thu Aug 29, 2013 7:48 pm    Post subject: Reply with quote

No, portage will favor the highest version that aren't "masked" that solves all dependencies in satisfying what you're trying to emerge.

The 4.11 versions are keyworded as "unstable" meaning it has not been fully tested:

KEYWORDS="~amd64 ~arm ~ppc ~ppc64 ~x86 ~amd64-fbsd ~x86-fbsd ~amd64-linux ~x86-linux"

but assumed to work OK hence it even has a keyword. To use these versions you need to accept the "~" unstable version by adding an exception to /etc/portage/package.accept_keywords. See "man portage" and look for package.accept_keywords for more info.

One possible result would be to add something like "kde-libs/kdelibs ~* *" to /etc/portage/package.accept_keywords to be architecture agnostic.
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Navar
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PostPosted: Thu Aug 29, 2013 8:07 pm    Post subject: Reply with quote

Roughly, in layman's terms, ignoring the 13+ other special cases someone will bring up...
Code:

$ equery l -p kde-base/kdelibs
 * Searching for kdelibs in kde-base ...
[-P-] [  ] kde-base/kdelibs-4.10.5-r1:4
[-P-] [ ~] kde-base/kdelibs-4.11.0:4
[-P-] [ ~] kde-base/kdelibs-4.11.0-r1:4

  • 1. Version dependencies from other packages installed or being installed.
  • 2. Use flag differences/dependencies between versions (this can vary between ebuild revision or just update of existing).
  • 3. arch keywording, ~ or non (somewhat same as #2).
  • 4. Often upgrading to newest version given keywording qualifier restriction.

Exception to #4 is when you've emerged a specific version of a package or --oneshot installing to avoid the package being in your world file for further updates.
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creaker
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PostPosted: Thu Aug 29, 2013 9:40 pm    Post subject: Reply with quote

Thanks for replies!
It's clear, if I want stable 4.11.0, I have to wait. Right now 4.11.0 pulls in a lot of masked packages.
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