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

Calculating dependencies ... done!
Dependency resolution took 0.97 s (backtrack: 0/20).

[ebuild  N     ] dev-libs/cxxopts-3.0.0-r1:0/3.0.0::gentoo  USE="-icu -test" 95 KiB

Total: 1 package (1 new), Size of downloads: 95 KiB