gentoo can not use overlay

my os is gentoo

i want to update x11-libs/cairo from lcd-filtering overlay, so

#layman --version
1.4.1
#layman -a lcd-filtering

and then

#echo 'source "/var/lib/layman/make.conf"' >> /etc/make.conf
#layman -l
* lcd-filtering    [Git       ] (git://gitorious.org/lcd-filtering/lcd-filtering.git

now i reinstall cairo

# emerge -pv x11-libs/cairo
[ebuild   R    ] x11-libs/cairo-1.10.2-r2  USE="X glib opengl svg xcb (-aqua) -debug -directfb -doc (-drm) (-gallium) (-openvg) (-qt4) -static-libs" 0 kB
Total: 1 package (1 reinstall), Size of downloads: 0 kB

it isn't install from lcd-filtering overlay, how can i slove this?

Thanks!

Solution

My guess is that you're running Gentoo with a stable ACCEPT_KEYWORDS (i.e. amd64, not ~amd64). The overlay version is not marked as stable. 1.10.2-r2 is the latest stable version in the Portage tree. You can't specifically force an overlay to take priority so you have two options...

Change KEYWORDS in the overlay version to make it stable.
Add "x11-libs/cairo ~amd64" to /etc/portage/package.keywords and add ">=x11-libs/cairo-1.11" to /etc/portage/package.mask.