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

Calculating dependencies ... done!
Dependency resolution took 0.99 s (backtrack: 0/20).

[ebuild   R    ] x11-libs/libSM-1.2.6::gentoo  USE="uuid -doc" 307 KiB

Total: 1 package (1 reinstall), Size of downloads: 307 KiB