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

Calculating dependencies ... done!
Dependency resolution took 1.03 s (backtrack: 0/20).

[ebuild  N     ] dev-perl/Cpanel-JSON-XS-4.410.0::gentoo  USE="-examples -test" PERL_FEATURES="ithreads (-debug) -quadmath" 258 KiB
[ebuild  N     ] dev-perl/JSON-MaybeXS-1.4.8::gentoo  USE="xs -test" PERL_FEATURES="ithreads (-debug) -quadmath" 24 KiB

Total: 2 packages (2 new), Size of downloads: 281 KiB