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

Calculating dependencies ... done!
Dependency resolution took 1.01 s (backtrack: 0/20).

[ebuild  N     ] x11-libs/libxkbfile-1.2.0::gentoo  57 KiB
[ebuild  N     ] x11-apps/xclock-1.2.1::gentoo  176 KiB

Total: 2 packages (2 new), Size of downloads: 233 KiB