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

Calculating dependencies ... done!
Dependency resolution took 1.09 s (backtrack: 0/20).

[ebuild  N     ] sci-mathematics/metamath-0.198::gentoo  458 KiB
[ebuild  N     ] sci-mathematics/metamath-databases-20220303::gentoo  USE="-doc" 20058 KiB

Total: 2 packages (2 new), Size of downloads: 20516 KiB