post_upgrade() {
    if usr/bin/pacman-key -l >/dev/null 2>&1; then
	usr/bin/pacman-key --populate ublinux
	#usr/bin/pacman-key --updatedb
    else
	echo " >>> Run \`pacman-key --init\` to set up your pacman keyring."
	echo " >>> Then run \`pacman-key --populate ublinux\` to install the UBLinux keyring."
    fi
}

post_install() {
    if [ -x usr/bin/pacman-key ]; then
	post_upgrade
    fi
}