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

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

[ebuild  N     ] app-admin/clsync-0.4.5::gentoo  USE="caps clsync hardened highload-locks inotify seccomp -apidoc -cgroups (-cluster) -control-socket -debug -doc -examples -extra-debug -extra-hardened -gio (-mhash) -namespaces -socket-library -static-libs" 270 KiB

Total: 1 package (1 new), Size of downloads: 270 KiB