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

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

[ebuild  N     ] app-eselect/eselect-zig-2::gentoo  0 KiB
[ebuild  N     ] dev-lang/zig-bin-0.10.1-r3:0.10::gentoo  USE="-doc -verify-sig" 43053 KiB

Total: 2 packages (2 new), Size of downloads: 43053 KiB