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-eselect/eselect-zig-2::gentoo  0 KiB
[ebuild  N     ] dev-lang/zig-bin-0.15.2:0.15::gentoo  USE="-verify-sig" 52475 KiB
[ebuild  N     ] sys-fs/ncdu-2.9.2::gentoo  USE="-verify-sig" 73 KiB

Total: 3 packages (3 new), Size of downloads: 52548 KiB