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

Calculating dependencies ... done!
Dependency resolution took 1.02 s (backtrack: 0/20).

[ebuild  N     ] net-libs/libvncserver-0.9.15-r1::gentoo  USE="24bpp filetransfer ipv6 jpeg png ssl threads zlib -gnutls -lzo -sasl (-systemd) -test" 587 KiB

Total: 1 package (1 new), Size of downloads: 587 KiB