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

Calculating dependencies ... done!
Dependency resolution took 0.98 s (backtrack: 0/20).

[ebuild  N     ] media-libs/iir1-1.10.0-r1::gentoo  USE="-test" 2274 KiB

Total: 1 package (1 new), Size of downloads: 2274 KiB