root/var/lib/pacman/local/gnome-icon-theme-2.28.0-1/install

   1 post_install() {
   2   gtk-update-icon-cache -q -t -f usr/share/icons/gnome
   3 }
   4
   5 post_upgrade() {
   6   gtk-update-icon-cache -q -t -f usr/share/icons/gnome
   7 }
   8
   9 post_remove() {
  10   gtk-update-icon-cache -q -t -f usr/share/icons/gnome
  11 }