#!/bin/sh

post_upgrade() {
  # return if old package version greater 4.4.21...
  (( $(vercmp $2 '4.4.21') > 0 )) && return

  cat <<EOM
 > Starting with 'libxcrypt' 4.4.21, weak password hashes (such as MD5 and SHA1)
 > are no longer accepted for new passwords. Users that still have their
 > passwords stored with a weak hash will be asked to update their password on
 > their next login.
 > If the login just fails (for example from display manager) switch to a
 > virtual terminal ('Ctrl-Alt-F2') and log in there once.
EOM
}