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

Calculating dependencies ... done!
Dependency resolution took 1.02 s (backtrack: 0/20).

[ebuild  N     ] dev-cpp/abseil-cpp-20260107.1:0/2601.1.0-cpp20::gentoo  USE="-debug -test -test-helpers" 2251 KiB
[ebuild  N     ] dev-libs/protobuf-31.1:0/31.1.0::gentoo  USE="libprotoc (libupb) protobuf protoc zlib -conformance -debug -emacs -examples -test" 9360 KiB

Total: 2 packages (2 new), Size of downloads: 11611 KiB