post_install() {
  cat <<'EOF'

  middleclick-autoscroll is installed but not active yet.

    middleclick-autoscroll          interactive menu
    middleclick-autoscroll enable   turn autoscroll on everywhere

  Run it as your own user, not with sudo: it only ever writes inside your own
  home directory, and there is nothing to configure by hand.

EOF
}

post_upgrade() {
  cat <<'EOF'

  Run `middleclick-autoscroll apply` (or just open the menu) if the version
  marker in your generated launcher entries should be refreshed.

EOF
}

pre_remove() {
  # The changes live in each user's home directory and cannot be undone from a
  # root-run hook, so say so while the command that does it still exists.
  cat <<'EOF'

  Before removing this package, run

    middleclick-autoscroll disable

  as each user that enabled it. That puts back every launcher entry, flag file
  and Steam script it changed. Removing the package without it leaves those
  changes in place with nothing left to undo them.

EOF
}