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Author: zmedico |
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Date: 2008-09-04 19:22:59 +0000 (Thu, 04 Sep 2008) |
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New Revision: 11490 |
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|
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Modified: |
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main/trunk/doc/package/ebuild/eapi/2.docbook |
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Log: |
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Document EAPI 2 blocker atom extensions (not yet implemented). |
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|
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|
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Modified: main/trunk/doc/package/ebuild/eapi/2.docbook |
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=================================================================== |
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--- main/trunk/doc/package/ebuild/eapi/2.docbook 2008-09-04 18:50:58 UTC (rev 11489) |
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+++ main/trunk/doc/package/ebuild/eapi/2.docbook 2008-09-04 19:22:59 UTC (rev 11490) |
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@@ -309,6 +309,34 @@ |
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</section> |
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<section id='package-ebuild-eapi-2-draft-dependencies'> |
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<title>Dependencies</title> |
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+ <section id='package-ebuild-eapi-2-draft-dependencies-blocker-atoms'> |
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+ <title>Blocker Atoms</title> |
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+ <section id='package-ebuild-eapi-2-draft-dependencies-blocker-atoms-new-meaning'> |
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+ <title>New Meaning for Old Syntax</title> |
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+ <para> |
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+ Blocker atoms which use the previously existing !atom syntax now have |
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+ a slightly different meaning. These blocker atoms indicate that |
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+ conflicting packages may be temporarily installed simultaneously. When |
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+ temporary simultaneous installation of conflicting packages occurs, the |
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+ installation of a newer package may overwrite any colliding files that |
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+ belong to an older package which is explicitly blocked. When such file |
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+ collisions occur, the colliding files cease to belong to the older |
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+ package, and they remain installed after the older package is |
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+ eventually uninstalled. The older package is uninstalled only after |
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+ any newer blocking packages have been merged on top of it. |
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+ </para> |
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+ </section> |
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+ <section id='package-ebuild-eapi-2-draft-dependencies-blocker-atoms-new-syntax'> |
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+ <title>New !!atom Syntax</title> |
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+ <para> |
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+ A new !!atom syntax is now supported, for use in special cases for which |
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+ temporary simultaneous installation of blocking packages should not be |
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+ allowed. If a given package happens to be blocked my a mixture of atoms |
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+ consisting of both the !atom and !!atom syntaxes, the !!atom syntax takes |
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+ precedence over the !atom syntax. |
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+ </para> |
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+ </section> |
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+ </section> |
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<section id='package-ebuild-eapi-2-draft-dependencies-use'> |
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<title>USE Dependencies</title> |
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<section id='package-ebuild-eapi-2-draft-dependencies-use-unconditional'> |
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