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

Calculating dependencies ... done!
Dependency resolution took 0.98 s (backtrack: 0/20).

[ebuild  N     ] app-arch/zpaq-7.15-r1::gentoo  USE="jit -debug" 978 KiB
[ebuild  N     ] app-arch/zpaq-extras-3::gentoo  228 KiB

Total: 2 packages (2 new), Size of downloads: 1205 KiB