available() {
        which "$1" >/dev/null 2>&1
}

updateiconcache() {
        touch --no-create /usr/share/icons/hicolor

        if available gtk-update-icon-cache
        then
                gtk-update-icon-cache -tq /usr/share/icons/hicolor
        fi
}

post_install() {
  updateiconcache
}

post_upgrade() {
  updateiconcache
}

pre_remove() {
  updateiconcache
}