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

Calculating dependencies ... done!
Dependency resolution took 0.99 s (backtrack: 0/20).

[ebuild  N     ] x11-libs/libXinerama-1.1.6::gentoo  USE="-doc" 263 KiB
[ebuild  N     ] x11-wm/goomwwm-1.0.0-r2::gentoo  USE="-debug" 397 KiB

Total: 2 packages (2 new), Size of downloads: 659 KiB