# arg 1: the new package version
post_install() {
  pkgver=$(echo $1 | sed -r 's/-[0-9]+$//')
  echo -e "\n$(tput setaf 2;tput bold)run:$(tput sgr0) /usr/lib/tktreectrl-$pkgver/demos/demo.tcl\n"
}

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