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

Calculating dependencies ... done!
Dependency resolution took 1.50 s (backtrack: 0/20).

[ebuild     U  ] net-libs/nghttp3-1.18.0::gentoo [1.15.0::gentoo] USE="-verify-sig" 402 KiB

Total: 1 package (1 upgrade), Size of downloads: 402 KiB