These are the packages that would be merged, in order:

Calculating dependencies  ..... ..... ... done!
[ebuild   R   ] x11-libs/cairo-1.4.10  USE="X* glitz svg -debug -directfb -doc -newspr -opengl -xcb" 0 kB [1] 

Total: 1 package (1 reinstall), Size of downloads: 0 kB
Portage overlays:
 [1] /usr/local/layman/xeffects