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

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

[ebuild  N     ] x11-libs/libXcursor-1.2.3::gentoo  USE="-doc" 286 KiB
[ebuild  N     ] x11-apps/xcursorgen-1.0.9::gentoo  124 KiB
[ebuild  N     ] x11-themes/vanilla-dmz-xcursors-0.4.5-r2::gentoo  926 KiB

Total: 3 packages (3 new), Size of downloads: 1336 KiB