The Problem

Currently, Flutter tightly integrates Material and Cupertino design systems,
making it challenging for developers who prefer a completely custom UI approach.

While CustomPainter and RenderObject provide low-level solutions,

1. they have key limitations

• Performance: skipping Flutter’s optimizations
• Accessibility
• Compositing: may need special handling in the layer tree

2. there is no built-in high-level widget that offers a minimalistic starting point without Material dependencies.

Current Status

Flutter Team has already acknowledged this issue
and the intent of addressing it in flutter roadmap 2024
specifically hinting at an active development of blankcanvas

Unfortunately this intent is contradicted by comments
from @MitchellGoodwin [1] and @Hixie [2]
which indicate that blankcanvas isn't actively worked on.

As far as I know there is no public repository for blankcanvas.

Proposal

I propose the creation (or migration with @Hixie 's blessing)
of blankcanvas in flutter/packages and pursuing the goals stated here

Related Issues

• Support for iOS 26 “Liquid Glass” Design in Cupertino Widgets #170310
• export Brightness from widgets #169294
• ☂️ Bring Material 3 Expressive to Flutter #168813
• Decouple Material and Cupertino from Flutters core packages #163400
• define ThemeExtension outside of material, with static .of and an InheritedWidget or InheritedModel #160597
• Move cupertino and material to separate packages #110195
• [proposal] un-bundle material from flutter sdk an make it available as package #109145
• ☂️ Move the material and cupertino packages outside of Flutter #101479
• ☂️ Reinforcement: Add more basic components to the core framework #97496
• ☂️ Reinforcement: Refactor widgets from design into the core before decoupling #53059