Hello,
news :
2008-02-06: release ebuild : crystalspace-ps-1.1-r26294
2008-02-06: release ebuild ; cel-ps-1.1-r2592
2008-02-06: and planeshift-0.3.018
2008-02-07: fix digest on planeshift ebuild (thanks to causality)
2008-02-08: fix sandbox permissions on cel-ps ebuild (thanks to causality)
2008-02-08: fix USE trouble with java and CS/CEL (thanks to Jannis)
2008-02-09: channel on IRC : #planeshift-gentoo, i have a bot on it

2008-02-09: fix USE, ebuilds CS/CEL now don't use python/perl/java/wx and check for need depends
2008-02-09: warning : if you get "cannot open /config/gldrivers.xml" it's because i put a wrong CRYSTAL env ... change it to CRYSTAL=/opt/planeshift/crystalspace/lib/crystalspace in psclient.sh pssetup.sh and psupdater.sh

2008-02-14: fix remove compilation of .dbg files for cel
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i just release new ebuilds for client 0.3.018 from 2007-02-07, crystalspace 26294 and cel 2592
a lots of change there, i advice you to unmerge planeshift, crystalspace and cel before merging new,
- ebuild of crystalspace and cel are now called crystalspace-ps and cel-ps because gentoo dev release officials ebuilds for crystalspace/cel which is NOT compatible with planeshift,
- don't worry my ebuilds are installed in /opt/planeshift/{crystalspace/cel} so they don't interfer with official ones,
- 3 scripts appears under /usr/games/bin : psupdater.sh, pssetup.sh and psclient.sh so you don't need to go in the good directory before launching it (it fixed the env too

see you soon
loux.thefuture
PS : take about change of ebuilds name in your portage.keywords or portage.unmask too

i realise that i didn't explain everything
Ok, create a overlay - mkdir /usr/local/portage & cd /usr/local/portage
download the ebuilds in it - wget
http://loux.thefuture.free.fr/portage.tar.bz2untar them - tar xjf portage.tar.bz2
add the overlay to gentoo echo "PORTDIR_OVERLAY=/usr/local/portage" >> /etc/make.conf
unmask them :
echo "dev-games/crystalspace-ps" >> /etc/portage/package.unmask
echo "dev-games/cel-ps" >> /etc/portage/package.unmask
echo "games-rpg/planeshift" >> /etc/portage/package.unmask
unkeywords them :
echo "dev-games/crystalspace-ps" >> /etc/portage/package.keywords
echo "dev-games/cel-ps" >> /etc/portage/package.keywords
echo "games-rpg/planeshift" >> /etc/portage/package.keywords
unuse them
echo "dev-games/crystalspace-ps -java" >> /etc/portage/package.use
echo "dev-games/cel-ps -java" >> /etc/portage/package.use
and compile : emerge planeshift
to have the new {art/data} folder, you need to download the binary and install it somewhere then copy {art/data} folder to /opt/planeshift/bin/.