Hiawatha is a new web server added to the tree. It has a cgi implementation by default, therefore it should be included as a depency to virtual/httpd and virtual/httpd-cgi
There is no such package as virtual/httpd. Which one did you mean? 1) virtual/httpd-basic 2) virtual/httpd-cgi 3) virtual/httpd-fastcgi 4) virtual/httpd-php
https://github.com/gentoo/gentoo/pull/11
https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=60faa1c7fcf702d130a3618f25830b7673d08b0e https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=f31f4f78420ef5ede5417a8523253a497406e856