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

Calculating dependencies ... done!
Dependency resolution took 1.00 s (backtrack: 0/20).

[ebuild  N     ] net-irc/irssi-1.4.5::gentoo  USE="perl proxy -otr (-selinux)" 1188 KiB

Total: 1 package (1 new), Size of downloads: 1188 KiB