求助，安装XFCE4

我想装XFCE4，但运行后出现下面的提示，不知道怎么办

TianQing / # emerge -a xfce4-meta

* IMPORTANT: 1 news items need reading for repository 'gentoo'.
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These are the packages that would be merged, in order:

Calculating dependencies... done!

emerge: there are no ebuilds built with USE flags to satisfy ">=x11-libs/cairo-1.6[X]".
!!! One of the following packages is required to complete your request:
- x11-libs/cairo-1.8.8 (Change USE: +X)
(dependency required by "x11-libs/gtk+-2.16.6" [ebuild])
(dependency required by "xfce-base/xfce-utils-4.6.1" [ebuild])
(dependency required by "xfce-base/xfce4-meta-4.6.1" [ebuild])
(dependency required by "xfce4-meta" [argument])


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* IMPORTANT: 1 news items need reading for repository 'gentoo'.
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答：eselect news read all

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emerge: there are no ebuilds built with USE flags to satisfy ">=x11-libs/cairo-1.6[X]".
!!! One of the following packages is required to complete your request:
- x11-libs/cairo-1.8.8 (Change USE: +X)
(dependency required by "x11-libs/gtk+-2.16.6" [ebuild])
(dependency required by "xfce-base/xfce-utils-4.6.1" [ebuild])
(dependency required by "xfce-base/xfce4-meta-4.6.1" [ebuild])
(dependency required by "xfce4-meta" [argument])

答：全局USE里面加上个X吧 或者 profile 里面选上个 desktop 省的到时一个一个加的麻烦

nano -w /etc/make.conf
USE="... X ..."

eselect profile set 2
[2] default/linux/x86/10.0/desktop *

能继续进行下去了，谢谢