Created attachment 285567 [details] ebuild for CGI-Emulate-PSGI.0.12 www-apps/rt-4.0.x has multiple perl dependencies that aren't in gentoo or perl-experimental. CGI-Emulate-PSGI is one of them
It's a PSGI adapter for CGI
dev-perl/CGI-Emulate-PSGI-0.140.0 is in the tree now. Thanks