What does --deep do again?

[jefftang]

I was under the impression that:

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emerge --deep --update world

Would update all packages to their latest version.

Messing around with revdep I find that gnome-panel is not up to date, but emerge doesn't seem to pick it up. It's not in the world file, but xmms depends on it. What's going on?

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malazan /root# emerge --deep --update --pretend world

These are the packages that I would merge, in order:

Calculating world dependencies ...done!

malazan /root# emerge -s gnome-panel
Searching...   
[ Results for search key : gnome-panel ]
[ Applications found : 1 ]
 
*  gnome-base/gnome-panel
      Latest version available: 2.4.1
      Latest version installed: 2.4.0
      Size of downloaded files: 2,580 kB
      Homepage:    http://www.gnome.org/
      Description: The Panel for Gnome2

[idl]

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man emerge

[jefftang]

I already rtfm, thanks.

--deep (-D)
When used in conjunction with --update, this flag forces emerge to consider the entire
dependency tree of packages, instead of checking only the immediate dependencies of the
packages. As an example, this catches updates in libraries that are not directly listed
in the dependencies of a package.

Given this documentation, I would expect an emerge -Dup world to cause gnome-panel to update. Instead it leaves it alone.

(BTW, meant to post this in the portage and progrmaming forum)

[jefftang]

OK. I think I understand what's going on.

xmms depends on: <gnome-base/gnome-panel-1.5.0

This is slot "1.4".

gnome-panel 2.4.1 is slot "0". When emerge does it's deep tree search it only considers the slots, so gnome-panel of any slot not "1.4", is left by the wayside.

To fix it, I'm doing:

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emerge -C gnome-panel
emerge -Du xmms

Now my new question. How can I catch situations like this? emerge depclean doesn't pick up this problem.