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

Calculating dependencies ... done!
Dependency resolution took 1.05 s (backtrack: 0/20).

[ebuild  N     ] dev-perl/Sub-Install-0.929.0::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 21 KiB
[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
[ebuild  N     ] dev-perl/Data-OptList-0.114.0::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 20 KiB
[ebuild  N     ] dev-perl/Sub-Exporter-0.991.0::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 57 KiB
[ebuild  N     ] dev-perl/String-Flogger-1.101.246::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 17 KiB

Total: 6 packages (6 new), Size of downloads: 394 KiB