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Viewing changes to DistUpgrade/DistUpgradeCache.py

  • Committer: Michael Vogt
  • Date: 2007-06-13 14:04:59 UTC
  • Revision ID: michael.vogt@ubuntu.com-20070613140459-ttjmu88325f21g5r
  - implement SystemCleanup spec unused dependencies removal

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Lines of Context:
DistUpgrade/DistUpgradeCache.py
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    def restore_snapshot(self):
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        """ restore a snapshot """
 
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        actiongroup = apt_pkg.GetPkgActionGroup(self._depcache)
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        self.clear()
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        for name in self.to_remove:
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            pkg = self[name]
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        # this is a delete candidate, only actually delete,
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        # if it dosn't remove other packages depending on it
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        # that are not obsolete as well
 
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        actiongroup = apt_pkg.GetPkgActionGroup(self._depcache)
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        self.create_snapshot()
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        try:
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            self[pkgname].markDelete()
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                    obsolete_pkgs.add(pkg.name)
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        return obsolete_pkgs
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    def _getUnusedDependencies(self):
 
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        " get all package names that are not downloadable "
 
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        unused_dependencies =set()        
 
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        for pkg in self:
 
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            if pkg.isInstalled and self._depcache.IsGarbage(pkg._pkg):
 
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                unused_dependencies.add(pkg.name)
 
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        return unused_dependencies
 
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    def _getForeignPkgs(self, allowed_origin, fromDist, toDist):
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        """ get all packages that are installed from a foreign repo
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            (and are actually downloadable)