Hello,everyone , i just want to upgrade my Gnome 2.32.1 to Gnome 3 . So i follow the steps below:
emerge layman 
layman -f -a gnome
echo "source /var/lib/layman/make.conf" >> /etc/make.conf
echo "*" >> /etc/eix-sync.conf
eix-sync

mkdir   /etc/portage/{package.use,package.accept_keywords,package.mask,package.unmask,profile}

ln -sf /var/lib/layman/gnome/status/portage-configs/package.use.mask.gnome3 /etc/portage/profile/package.use.mask.gnome3


ln -sf /var/lib/layman/gnome/status/portage-configs/package.use.gnome3 /etc/portage/package.use/package.use.gnome3

ln -sf /var/lib/layman/gnome/status/portage-configs/package.unmask.gnome3 /etc/portage/package.unmask/package.unmask.gnome3

ln -sf /var/lib/layman/gnome/status/portage-configs/package.kewords.gnome3 /etc/portage/package.accept_keywords/package.keywords.gnome3


emerge -aDuv world

Then it comes error , 

/etc/portage/profile/package.use.mask.gnome3 
/etc/portage/package.unmask/package.unmask.gnome3  
/etc/portage/package.use/package.use.gnome3  
/etc/portage/package.accept_keywords/package.keywords.gnome3

Can anyone help me how to deal with that problem?
--
好好学习,天天向上!!!