post_install() {
  echo "Updating GTK icon cache ..."
  /usr/bin/gtk-update-icon-cache -f -t /usr/share/icons/hicolor
}

post_upgrade() {
  echo "Updating GTK icon cache ..."
  /usr/bin/gtk-update-icon-cache -f -t /usr/share/icons/hicolor
}

post_remove() {
  echo "Updating GTK icon cache ..."
  /usr/bin/gtk-update-icon-cache -f -t /usr/share/icons/hicolor
}