post_upgrade() {
  if [ "$(vercmp 2.4 "$2")" -eq 1 ]; then
    echo "The policy storage location changed in SELinux Userspace Project 2.4 from /etc/selinux to /var/lib/selinux."
    echo "Run /usr/lib/selinux/semanage_migrate_store to migrate your policy files to the new location."
  fi
}