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

Calculating dependencies ... done!
Dependency resolution took 0.96 s (backtrack: 0/20).

[ebuild  N     ] dev-libs/cxxopts-3.2.0-r1:0/3.2.0::gentoo  USE="-icu -test" 157 KiB

Total: 1 package (1 new), Size of downloads: 157 KiB