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

Calculating dependencies ... done!
Dependency resolution took 0.97 s (backtrack: 0/20).

[ebuild  N     ] x11-themes/hicolor-icon-theme-0.17::gentoo  52 KiB
[ebuild  N     ] x11-themes/xfce-gant-icon-theme-3.9_p6-r2::gentoo  31243 KiB

Total: 2 packages (2 new), Size of downloads: 31295 KiB