Zoneminder's developers have released a new version of application (last one in portage is 1.30.2) with more bugfix and security issues. It would be great if it will be in portage. I think it's possible to use 1.30.2-r1 ebuild version as kick-off for building new package. You can try with it. Reproducible: Always
Confirmed you can simply rename existing as zoneminder-1.30.4.ebuild (I actually encountered an issue with zmc restarting in the 1.30.2-r1 release. That issues was reported fixed in 1.30.3, so I've been running the latest upstream release now without issue)
commit f8796ea819bb3bc16ea85ec84c43dd9f21010982 Author: MalakymR <MalakymR@esdf.uk> Date: Wed Sep 6 15:06:22 2017 +0100 www-misc/zoneminder: version bump to 1.30.4 * sample modified to work with new 2.4 apache syntax * README: import schema as root Closes: https://github.com/gentoo/gentoo/pull/5661