fallback for custom_packages in builder script
fallback for custom_packages in builder script


Former-commit-id: 3d1a521b38f3f4801fc14ffd391c38681488a01e [formerly 31b2fbecf6eece19812e470854d53d08e88c52a7]
Former-commit-id: 06290715f94385403b3b6aa43bbf57a7eef83ee4
romancow/Sugar,andrewplummer/Sugar,romancow/Sugar,andrewplummer/Sugar