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

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

[ebuild  N     ] net-libs/libnxml-0.18.5::gentoo  USE="-doc -examples" 37 KiB
[ebuild  N     ] net-libs/libmrss-0.19.4::gentoo  USE="-doc -examples" 43 KiB
[ebuild  N     ] net-news/rsstail-2.2::gentoo  13 KiB

Total: 3 packages (3 new), Size of downloads: 93 KiB