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| -rw-r--r-- | doc/package/ebuild/eapi/2.docbook | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/doc/package/ebuild/eapi/2.docbook b/doc/package/ebuild/eapi/2.docbook index a972b5b0c..f854e059d 100644 --- a/doc/package/ebuild/eapi/2.docbook +++ b/doc/package/ebuild/eapi/2.docbook @@ -309,6 +309,34 @@ src_compile() { </section> <section id='package-ebuild-eapi-2-draft-dependencies'> <title>Dependencies</title> + <section id='package-ebuild-eapi-2-draft-dependencies-blocker-atoms'> + <title>Blocker Atoms</title> + <section id='package-ebuild-eapi-2-draft-dependencies-blocker-atoms-new-meaning'> + <title>New Meaning for Old Syntax</title> + <para> + Blocker atoms which use the previously existing !atom syntax now have + a slightly different meaning. These blocker atoms indicate that + conflicting packages may be temporarily installed simultaneously. When + temporary simultaneous installation of conflicting packages occurs, the + installation of a newer package may overwrite any colliding files that + belong to an older package which is explicitly blocked. When such file + collisions occur, the colliding files cease to belong to the older + package, and they remain installed after the older package is + eventually uninstalled. The older package is uninstalled only after + any newer blocking packages have been merged on top of it. + </para> + </section> + <section id='package-ebuild-eapi-2-draft-dependencies-blocker-atoms-new-syntax'> + <title>New !!atom Syntax</title> + <para> + A new !!atom syntax is now supported, for use in special cases for which + temporary simultaneous installation of blocking packages should not be + allowed. If a given package happens to be blocked my a mixture of atoms + consisting of both the !atom and !!atom syntaxes, the !!atom syntax takes + precedence over the !atom syntax. + </para> + </section> + </section> <section id='package-ebuild-eapi-2-draft-dependencies-use'> <title>USE Dependencies</title> <section id='package-ebuild-eapi-2-draft-dependencies-use-unconditional'> |