## arg 1:  the new package version
post_install() {
  # Make sure the group and user "mailman" exists on this system and has the correct values
  if grep -q "^mailman:" /etc/group &> /dev/null ; then
    groupmod -g 80 -n mailman mailman &> /dev/null
  else
    groupadd -g 80 mailman &> /dev/null
  fi
  
  if grep -q "^mailman:" /etc/passwd 2> /dev/null ; then
    usermod -s /sbin/nologin -c "GNU Mailing List Manager" -d /usr/lib/mailman -u 80 -g mailman mailman &> /dev/null
  else
    useradd -s /sbin/nologin -c "GNU Mailing List Manager" -d /usr/lib/mailman -u 80 -g mailman -M -r mailman &> /dev/null
  fi 

  # check file permissions
#  cd /usr/lib/mailman && bin/check_perms -f  > /dev/null 2>&1     # -f applies fixes we should solve in the PKGBUILD
  cd /usr/lib/mailman && bin/check_perms > /dev/null
}

## arg 1:  the new package version
## arg 2:  the old package version
post_upgrade() {
  post_install $1
}

## arg 1:  the old package version
pre_remove() {
  userdel mailman &>/dev/null
  groupdel mailman &>/dev/null || /bin/true
}