pre_upgrade() {
  local _active=/tmp/.macfanctld
  systemctl daemon-reload
  if [ $(systemctl is-active macfanctld.service) ]; then
    systemctl --quiet stop macfanctld.service
    touch $_active
  elif [ -f $_active ]; then
    rm --force $_active
  fi
}

post_upgrade() {
  local _active=/tmp/.macfanctld
  systemctl daemon-reload
  if [ -f $_active ]; then
    systemctl --quiet start macfanctld.service
    rm --force $_active
  fi
}

pre_remove() {
  if [ $(systemctl is-active macfanctld.service) ]; then
    systemctl --quiet stop macfanctld.service
  fi
}