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

Calculating dependencies ... done!
Dependency resolution took 0.96 s (backtrack: 0/20).

[ebuild  N     ] media-libs/codec2-1.2.0:0/1.0::gentoo  USE="-test" 7509 KiB

Total: 1 package (1 new), Size of downloads: 7509 KiB