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

Calculating dependencies ... done!
Dependency resolution took 0.99 s (backtrack: 0/20).

[ebuild  N     ] dev-perl/Log-Agent-1.5.0::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 57 KiB
[ebuild  N     ] dev-perl/ExtUtils-Depends-0.800.200::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 17 KiB
[ebuild  N     ] dev-perl/ExtUtils-PkgConfig-1.160.0-r1::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 10 KiB
[ebuild  N     ] dev-perl/glib-perl-1.329.400::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 296 KiB

Total: 4 packages (4 new), Size of downloads: 379 KiB