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

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

[ebuild  N     ] media-libs/zint-2.16.0:0/2.16::gentoo  USE="png -gui -test" 6273 KiB

Total: 1 package (1 new), Size of downloads: 6273 KiB