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

Calculating dependencies ... done!
Dependency resolution took 1.52 s (backtrack: 0/20).

[ebuild     U  ] dev-build/autoconf-wrapper-20260320::gentoo [20231224::gentoo] 4 KiB
[ebuild  NS    ] dev-build/autoconf-2.73-r2:2.73::gentoo [2.72-r6:2.72::gentoo] USE="-verify-sig" 1385 KiB

Total: 2 packages (1 upgrade, 1 in new slot), Size of downloads: 1388 KiB