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

Calculating dependencies ... done!
Dependency resolution took 1.08 s (backtrack: 0/20).

[ebuild  N     ] dev-build/b2-5.5.3::gentoo  USE="-examples" 1198 KiB
[ebuild  N     ] dev-libs/check-0.15.2-r2::gentoo  USE="-doc -subunit -test" 299 KiB
[ebuild  N     ] dev-libs/boost-1.91.0-r2:0/1.91.0::gentoo  USE="bzip2 context nls python stacktrace zlib -debug -doc -icu -lzma -mpi -numpy -test -test-full -tools -zstd" PYTHON_TARGETS="python3_14 -python3_12 -python3_13" 199785 KiB
[ebuild  N     ] dev-cpp/asio-1.30.2::gentoo  USE="-doc -examples -test" 3122 KiB
[ebuild  N     ] sys-cluster/galera-26.4.27::gentoo  USE="ssl -garbd" 3664 KiB

Total: 5 packages (5 new), Size of downloads: 208066 KiB