snippet deps "for app in"
	# check requirements
	for tool in $1; do
		if ! command -v "$tool" >/dev/null; then
			printf "%s: %s not installed but required\n" "$(basename "\$0")" "$tool" >&2
			exit 1
		fi
	done
	
	$0
snippet doc "script docs"
	#
	# DESCRIPTION:
	#  $1
	#
	$0