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

Calculating dependencies ... done!
Dependency resolution took 0.96 s (backtrack: 0/20).

[ebuild   R    ] sys-libs/zlib-1.3.2-r1:0/1::gentoo  USE="-minizip -static-libs -verify-sig" 1290 KiB

Total: 1 package (1 reinstall), Size of downloads: 1290 KiB