I'm glad we finally have a freshclam systemd service available, but it would be nice to have clamonacc service too.
It looks like this (and a number of other service files) are now generated by template files upstream: https://github.com/Cisco-Talos/clamav/blob/main/clamonacc/clamav-clamonacc.service.in I don't seem to see this file on my system though, so I'll have to dig into it some more another day.
Actually.... I just didn't have the USE enabled. `/usr/lib/systemd/system/clamav-clamonacc.service`. If you emerge on a machine with systemd and USE=clamonacc this file should exist.