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

Calculating dependencies ... done!
Dependency resolution took 1.02 s (backtrack: 0/20).

[ebuild  N     ] x11-apps/xmessage-1.0.7::gentoo  126 KiB
[ebuild  N     ] x11-misc/bbweather-0.6.3-r2::gentoo  79 KiB

Total: 2 packages (2 new), Size of downloads: 205 KiB