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

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

[ebuild  N     ] dev-lang/tk-8.6.17:0/8.6::gentoo  USE="threads truetype (-aqua) -debug -test -xscreensaver" 4486 KiB
[ebuild  N     ] x11-libs/libXcursor-1.2.3::gentoo  USE="-doc" 286 KiB
[ebuild  N     ] dev-tcltk/tkdnd-2.9.5::gentoo  USE="X threads -debug" 1334 KiB

Total: 3 packages (3 new), Size of downloads: 6105 KiB