I'm am strongly against a setuid helper. I have a roadmap written up to get user timer units (other other units) into systemd, which would also form the basis of a permission controlled secure app environment (which is a big upstream goal) which would fill this feature gap, but that would certainly be a long way off.
If you need user crontab you should just install cron. user crontabs are a complicated security-involved feature and you should stick with cron which is well audited until upstream systemd fixes this feature discrepancy (same goes for use of at(1) by unprivileged users) -- Shawn Landden +1 360 389 3001 (SMS preferred) -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org