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

Calculating dependencies ... done!
Dependency resolution took 0.99 s (backtrack: 0/20).

[ebuild  N     ] net-libs/rabbitmq-c-0.13.0:0/4::gentoo  USE="ssl -doc -static-libs -test -tools" 124 KiB

Total: 1 package (1 new), Size of downloads: 124 KiB