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

Calculating dependencies ... done!
Dependency resolution took 1.00 s (backtrack: 0/20).

[ebuild  N     ] dev-libs/json-glib-1.10.8::gentoo  USE="nls -gtk-doc -introspection -test" 1264 KiB
[ebuild  N     ] dev-libs/jsonrpc-glib-3.44.2:0/1::gentoo  USE="-gtk-doc -introspection -test -vala" 42 KiB

Total: 2 packages (2 new), Size of downloads: 1306 KiB