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

Calculating dependencies ... done!
Dependency resolution took 0.95 s (backtrack: 0/20).

[ebuild  N     ] media-libs/quirc-1.2-r3:0/1.2::gentoo  USE="-opencv -sdl -tools -v4l" 42 KiB

Total: 1 package (1 new), Size of downloads: 42 KiB