post_install() {
	[ -x `which update-mime-database` ] &&  update-mime-database usr/share/mime
}

post_upgrade() {
	[ -x `which update-mime-database` ] &&  update-mime-database usr/share/mime
}

post_remove() {
	[ -x `which update-mime-database` ] &&  update-mime-database usr/share/mime
}