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

Calculating dependencies ... done!
Dependency resolution took 1.02 s (backtrack: 0/20).

[ebuild   R    ] dev-perl/Config-AutoConf-0.320.0::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 52 KiB

Total: 1 package (1 reinstall), Size of downloads: 52 KiB