post_install() {
  systemd-sysusers jenkins.conf
  [[ -d var/lib/jenkins ]] || install -dm 750 -o jenkins -g jenkins var/lib/jenkins
  systemd-tmpfiles --create jenkins.conf
}

post_upgrade() {
  (( $(vercmp $2 '1.633-1') < 0 )) && systemd-sysusers jenkins.conf || true
}