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-apps/xmessage-1.0.7::gentoo  126 KiB
[ebuild  N     ] x11-plugins/wmweather-2.4.8::gentoo  111 KiB

Total: 2 packages (2 new), Size of downloads: 237 KiB