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

Calculating dependencies ... done!
Dependency resolution took 1.00 s (backtrack: 0/20).

[ebuild  N     ] app-arch/7zip-26.04::gentoo  USE="symlink -jwasm -rar -uasm" 3064 KiB
[ebuild  N     ] app-arch/lzma-19.00-r1::gentoo  USE="-doc" 1058 KiB

Total: 2 packages (2 new), Size of downloads: 4121 KiB