On Wednesday 02 November 2005 21:54, Duncan wrote:
> Hmm...  That --noreplace is a new one on me.  I normally simply
>
> echo <category/pkg> >> /var/lib/portage/world
>
> That appends the echoed cat/package to the end of the named file,
> accomplishing what we are after.  The only down side to doing it manually
> (using echo) is if you typo.  Still, that's not hard to catch and fix, if
> depclean still wants to remove the package you (thought you) just added.
> Newer versions of portage (don't believe it's in stable portage yet) even
> have an emaint command that removes the bad lines for you.

So did I, but now the warning `emerge depclean` produces tells me I can use 
this. I find this rather nice as it is a lot safer and keeps the world file 
free from user errors. For example replacing >> with > would be the most 
destructive user error :P
I have portage 2.0.53_rc7 installed and I'm not sure which version introduced 
--noreplace so it might not be available for everyone yet.

> 2.  All this should reemphasize the role of the world file.  It should
> list all your "leaf" packages, for the most part, executables.  It should
> NOT list "trunk and branch" packages, dependencies of the leaves, for the
> most part, libraries and the like.

Ed Catmur has written a script that prunes the world file.
http://home.jesus.ox.ac.uk/~ecatmur/my-bin/dep
This will tune your world to only list leaf packages.
But this may not always be desired, use at your own discretion.

I've got nothing else to add so I guess this concludes the course "Maintaining 
Gentoo in a nutshell" by Duncan and Harm Geerts :)
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