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

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

[ebuild  N     ] dev-cpp/json11-1.0.0-r1::gentoo  USE="-test" 13 KiB

Total: 1 package (1 new), Size of downloads: 13 KiB