The package should provide atd.service file. Reproducible: Always
Please add block for bug 448882 in this bug and in bug 471128.
From: https://github.com/Sabayon/systemd-love/tree/master/sys-process/at I will commit in a week if nobody disagrees. Thanks
+ 13 Jul 2013; Pacho Ramos <pacho@gentoo.org> +files/atd.service, + at-3.1.13-r2.ebuild: + Install unit file (#471126) +