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

Calculating dependencies  ...... done!
[ebuild     U  ] app-editors/nano-3.1::gentoo [3.0-r1::gentoo] USE="magic minimal ncurses unicode -debug -justify -nls -slang -spell -static" 0 KiB

Total: 1 package (1 upgrade), Size of downloads: 0 KiB