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

Calculating dependencies ... done!
Dependency resolution took 1.49 s (backtrack: 0/20).

[ebuild     U  ] dev-perl/Devel-Size-0.860.0::gentoo [0.850.0::gentoo] USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 75 KiB

Total: 1 package (1 upgrade), Size of downloads: 75 KiB