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

Calculating dependencies ... done!
Dependency resolution took 1.01 s (backtrack: 0/20).

[ebuild  N     ] net-analyzer/hydra-9.6::gentoo  USE="ncurses pcre zlib -debug -gcrypt -gtk -idn -libssh -memcached -mongodb -mysql -oracle -postgres -rdp -samba -subversion" 818 KiB

Total: 1 package (1 new), Size of downloads: 818 KiB