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

Calculating dependencies ... done!
Dependency resolution took 1.10 s (backtrack: 0/20).

[ebuild  N     ] dev-perl/String-Approx-3.280.0-r1::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 45 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/common-sense-3.750.0::gentoo  PERL_FEATURES="ithreads (-debug) -quadmath" 14 KiB
[ebuild  N     ] dev-perl/Canary-Stability-2013.0.0::gentoo  PERL_FEATURES="ithreads (-debug) -quadmath" 5 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/AnyEvent-7.170.0::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 298 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/Types-Serialiser-1.10.0::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 7 KiB
[ebuild  N     ] dev-perl/AnyEvent-CacheDNS-0.80.0-r1::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 6 KiB
[ebuild  N     ] dev-perl/AnyEvent-HTTP-2.250.0::gentoo  PERL_FEATURES="ithreads (-debug) -quadmath" 28 KiB
[ebuild  N     ] dev-perl/XML-SAX-Expat-0.510.0-r3::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 7 KiB
[ebuild  N     ] dev-perl/JSON-XS-4.40.0::gentoo  USE="-examples -test" PERL_FEATURES="ithreads (-debug) -quadmath" 86 KiB
[ebuild  N     ] dev-perl/JSON-4.100.0::gentoo  USE="xs -examples -test" PERL_FEATURES="ithreads (-debug) -quadmath" 93 KiB
[ebuild  N     ] dev-perl/XML-Simple-2.250.0-r1::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 77 KiB
[ebuild  N     ] dev-perl/VM-EC2-1.280.0-r1::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 353 KiB

Total: 15 packages (15 new), Size of downloads: 1104 KiB