post_install() {
    if [ -x /usr/bin/xdg-icon-resource ] ; then
        xdg-icon-resource forceupdate --theme hicolor &> /dev/null
    fi

    if [ -x update-desktop-database ] ; then
        update-desktop-database -q
    fi
}

post_upgrade() {
  post_install
}

post_remove() {
  post_install
}