how to rebuild meta-packages

[iliah]

I guess it's quite simple question for you

how to rebuild already installed meta-packages (eg. modular xorg-x11 or kde-meta)

[Zarhan]

Not easily - as proper package 'sets' are not yet integrated in portage (See GLEP 21. The meta packages are just an intermediate solution). Emerging with the -e options is probably the closest you can get, altough that rebuilds a lot of other stuff as well.

[mdeininger]

if you only wanted to update, you could use the -auNDv set of options. this will rebuild all the packages where use-flags were changed or where there are new versions and it will do a "deep" dependency-scan.
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[nealbirch]

If you wanted to do just the x11 packages in the rebuilding of xorg-x11 you could do the following:

# for i in `emerge -pe xorg-x11 | grep x11 | cut -d " " -f 8` ; do emerge =$i ; done

for other metapackages you may have to play with it a bit. I think this would miss some of the fonts, for instance, but you could compare the list against what got rebuilt.

[dmartinsca]

ecatmur's dep script looks like it can handle this pretty well. (Great script, i keep finding new uses for it all the time! Cheers Ed!)
You can get a copy of it from here, although i can't access the site right now.
Refering to the man page for dep, the -l switch lists dependancies of a package and the -1 switch produces output suitable for emerge --oneshot. For example: dep -l1 xfce4 produces the following output.

[curtis119]

I have ecatmurs udept script from 3 days ago mirrored here:
http://dev.gentoo.org/~curtis119/udept.tar.gz

untar it into /usr/local/portage/app-portage/

then "emerge udept".
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