**Describe the bug** ## DOES NOT WORK `proxy.Proxy(plugins=["...", "...",])` will not result in discovering custom flags defined in the external plugins. ## FOLLOWING 2 SCENARIO WORKS `proxy.Plugin(*("--plugin", "...", "--plugin", "..."))` or `proxy --plugin ....` ## FIX `args.plugins` must be resolved prior to calling `Flags.parse` for custom flag discovery.