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

Calculating dependencies ... done!
Dependency resolution took 1.01 s (backtrack: 0/20).

[ebuild  N     ] dev-libs/raft-0.22.1::gentoo  USE="-lz4 -test -zfs" 354 KiB
[ebuild  N     ] dev-libs/cowsql-1.15.9::gentoo  USE="-test" 357 KiB

Total: 2 packages (2 new), Size of downloads: 710 KiB