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

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

[ebuild  N     ] app-arch/lz4-1.10.0-r1:0/1.10.0-meson::gentoo  USE="-static-libs -test" 379 KiB
[ebuild  N     ] sys-apps/ugrep-7.5.0::gentoo  USE="pcre -brotli -bzip3" CPU_FLAGS_X86="avx2 sse2" 7005 KiB

Total: 2 packages (2 new), Size of downloads: 7383 KiB