Re: [gentoo-portage-dev] accessing portage updates through it's data structures

[Tom Hosiawa]

> > > Anybody have any ideas how I can basically do 'emerge -puDNv' directly
> > > from my superkaramba python program, and get the updates available
> > > directly from the portage data structures?
> >
> > What is needed for -uDNv is mostly locked away in emerge, unfortunately.
> > The following couple of lines should get you everything other than --newuse
> > though. As you only seem to be interested in what packages are available
> > for updating, the ordering shouldn't really matter.
> >
> >
> > import portage
> >
> > pdb = portage.db["/"]["porttree"].dbapi
> > vdb = portage.db["/"]["vartree"].dbapi
> >
> > installed_pkgs = dict([(key, vdb.match(key)) for key in vdb.cp_all()])
> > latest_pkgs = dict([(key, portage.best(pdb.match(key))) for key in installed_pkgs])
> > updatable_pkgs = [latest_pkgs[key] for key in latest_pkgs if latest_pkgs[key] not in installed_pkgs[key]]
> > updatable_pkgs = [pkg for pkg in updatable_pkgs if pkg]
> >
> >
> > That last line there is to kill off the None elements that end up in
> > updatable_pkgs when there is a package installed that has no versions
> > available in the rsync tree. Other than that, portage.catpkgsplit() will
> > split a package identifier into [cat, pkg, ver, rev].
>
> Thanks, I'll need more flexibility thoough. I'll just strip down
> emerge for what I need and include it with my program.
> --
> Tom

After doing some testing, I just noticed one can't check world updates
in a regular account (non root). Funny thing is, emerge doesn't report
that it can't, it just gives a partial list of what's actually
available if it's done under root.

Is this by design or a bug?
--
Tom

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