Automate Flutter's New Split Package Migration with AI Agent Skills

The Flutter framework has recently made a significant architectural change, un bundling Material Design and Cupertino libraries into standalone pub packages: material_ui and cupertino_ui. This decoupling offers benefits such as independent release cycles, lighter core framework footprints, and true headless UI development. However, it also presents a major migration challenge for existing Flutter apps.

AI coding assistants, which many developers rely on, often struggle with this migration due to LLM training cutoffs. The open-source dart-sdk-skills repository provides a solution to automate this migration process in a single prompt. The architectural shift to split packages was driven by the drawbacks of the previous monolithic approach, including coupled release cycles, framework bloat, and design system collisions.

The modern decoupled architecture maintains both design systems as independent packages on pub.dev. The challenge lies in the fact that unassisted AI agents can make mistakes when given instructions to migrate projects to the new split Flutter design packages. This is where the dart-sdk-skills comes in, offering precise rules, API matrices, and tactical upgrade runbooks for AI coding agents.

Installing the skills is straightforward, and once installed, the AI agent automatically recognizes split-package requests. The migration workflow consists of four main phases: automated analysis and data-driven transforms, dependency configuration in pubspec.yaml, canonical import rewrites, and localization delegate binding. By following this pipeline, the AI agent can seamlessly migrate Flutter projects to the new standalone material_ui and cupertino_ui packages.