[gentoo-user] Re: Emerge question: What's with the @?

[Chris Lieb <chris.lieb@gmail.com>]

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Nick Cunningham wrote:
> 
> 
> 2009/1/13 Chris Lieb <chris.lieb@gmail.com <mailto:chris.lieb@gmail.com>>
> 
>     I've noticed lately on the ML that people have been talking about using
>     package sets, such as @world and @installed.  I figured it was a part of
>     portage 2.1.6* since using @world with 2.1.4* would result in an error
>     message about an invalid package atom.  However, after upgrading to
>     portage 2.1.6.4, I still get the same error when doing something like
>     'emerge -up @world'.
> 
>     What are these package sets?  What is the difference between 'emerge -up
>     world' and 'emerge -up @world'?  Why don't these package sets ever work
>     for me?
> 
>     Thanks,
>     Chris
> 
> 
> A set is basically just group of packages, you can either define you own
> using /etc/portage/ or using gentoo provided ones like @world and
> @system (which will replace the current emerge system/world usage
> eventually), aswell as useful sets such as @live-rebuild (any package
> that uses a cvs/svn/git eclass, so basically any -9999 ebuild) and
> @module-rebuild which is handy for rebuilding kernel modules. Also id
> imagine meta-packages will eventually move over to sets as it makes
> rebuilding everything or removing it much easier, currently theres only
> kde4 that makes large usage of sets but id imagine once portage 2.20
> goes stable we'l see great set adoption.
> An easy way to see what sets are available is to use the emerge
> --list-sets command.
> 
> -Nick

Thanks for the info.  The @module-rebuild should come in handy.  Any
idea on when we'll see 2.2* hit stable?

Thanks again,
Chris

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