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

Calculating dependencies ... done!
Dependency resolution took 1.64 s (backtrack: 0/20).

[ebuild  N     ] dev-perl/Module-Runtime-0.18.0::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 27 KiB
[ebuild  N     ] dev-perl/File-Which-1.270.0-r1::gentoo  USE="-pwhich -test" PERL_FEATURES="ithreads (-debug) -quadmath" 25 KiB
[ebuild  N     ] dev-perl/Sub-Install-0.929.0::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 21 KiB
[ebuild  N     ] dev-perl/Class-Tiny-1.8.0::gentoo  USE="-minimal -test" PERL_FEATURES="ithreads (-debug) -quadmath" 25 KiB
[ebuild  N     ] dev-perl/Role-Tiny-2.2.4::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 36 KiB
[ebuild  N     ] dev-perl/Unicode-UTF8-0.620.0-r1::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 86 KiB
[ebuild  N     ] dev-perl/Path-Tiny-0.150.0::gentoo  USE="-minimal -test" PERL_FEATURES="ithreads (-debug) -quadmath" 104 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  NS    ] app-text/docbook-xml-dtd-4.3-r2:4.3::gentoo [4.1.2-r7:4.1.2::gentoo, 4.2-r3:4.2::gentoo, 4.4-r3:4.4::gentoo, 4.5-r2:4.5::gentoo] 82 KiB
[ebuild  N     ] x11-misc/xdg-user-dirs-0.20::gentoo  USE="-gtk" 53 KiB
[ebuild  N     ] dev-perl/File-HomeDir-1.6.0-r1::gentoo  USE="xdg -test" PERL_FEATURES="ithreads (-debug) -quadmath" 36 KiB
[ebuild  N     ] dev-perl/Path-IsDev-1.1.3-r1::gentoo  USE="-minimal -test" PERL_FEATURES="ithreads (-debug) -quadmath" 185 KiB

Total: 13 packages (12 new, 1 in new slot), Size of downloads: 750 KiB