Comment # 17 on bug 1173461 from Franck Bui

systemd already ships tmp.mount in /usr/share/systemd/ so if anyone wants to
switch to tmpfs for /tmp, he just needs to do 'systemctl link
/usr/share/systemd/tmp.mount'.

Regarding shipping systemd-tmpfs, I would try to avoid that otherwise we will
end up with ton of systemd sub packages for just configuring the different
systems out there (we have already systemd-logger, and now we're considering
shipping a new sub package to just use different time server pools on SUSE and
on openSUSE...)