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

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

[ebuild  N     ] dev-perl/Tree-DAG_Node-1.350.0::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 65 KiB
[ebuild  N     ] dev-perl/XML-SAX-Base-1.90.0-r1::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 28 KiB
[ebuild  N     ] dev-perl/XML-NamespaceSupport-1.120.0-r1::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 18 KiB
[ebuild  N     ] dev-perl/XML-SAX-1.20.0-r2::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 47 KiB
[ebuild  N     ] dev-perl/XML-Filter-BufferText-1.10.0-r2::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 3 KiB
[ebuild  N     ] dev-perl/XML-Validator-Schema-1.100.0-r2::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 56 KiB

Total: 6 packages (6 new), Size of downloads: 215 KiB