gpui-toolkit

Libraries, examples, and tooling for building GPUI applications with native div()-based rendering, reusable components, charting primitives, design tokens, and Apple mobile backends.

Examples

Two open source examples:

• SotF available in the Apple and Windows app stores, see GH for latest versions and Linux builds, 100% built with this toolkit. It works on ARM and X86 with iOS and macOS ports underway.
• StkOpt is a simpler example

Workspace Crates

Crate	Purpose
gpui-au	macOS Audio Unit platform backend for embedding GPUI rendering inside AUv3 view controllers.
gpui-android	Android platform backend and JNI integration for GPUI applications.
gpui-audio-kit	Audio-focused UI controls for plugin and playback interfaces, including knobs and vertical sliders.
gpui-builder	Constraint-based layout solver with responsive display tiers, dividers, auto-axis behavior, and showcase examples.
gpui-component-lab	Prop-driven component lab and responsive preview matrix for design-system conformance work.
gpui-d3rs	D3.js-inspired visualization primitives: scales, shapes, colors, geo projections, force layouts, Delaunay/Voronoi, GPU 2D, and GPU 3D.
gpui-design	Platform-adaptive design system tokens for spacing, corners, typography, animation, and GPUI integration.
gpui-design-tools	CLI tooling for exporting, importing, and validating design tokens and conformance reports.
gpui-ios	iOS/tvOS platform backend for GPUI with Metal rendering, touch input, text input, accessibility, platform views, and hot reload hooks.
gpui-keybinding	Reusable keybinding framework with editor-style preset support for GPUI applications.
gpui-miniapp	Small application shell used by examples and showcases to select the right GPUI platform backend.
gpui-pretext	High-performance text measurement and multiline layout utilities.
gpui-profiler	Lightweight allocation profiling and hot-path regression utilities.
gpui-px	Plotly Express-style charting API built on gpui-d3rs for scatter, line, bar, heatmap, contour, surface, pie, boxplot, and treemap views.
gpui-python-runtime	Retained scene specification runtime for a GPUI Python wrapper, with an optional showcase.
gpui-scaffolder	CLI for creating standalone GPUI mini-app projects backed by gpui-miniapp.
gpui-themes	Theme editor and theme showcase infrastructure for GPUI applications.
gpui-ui-kit	Reusable UI component library: buttons, inputs, dialogs, menus, tabs, tables, QR, command palette, sidebar, wizard, workflow canvas, and more.
gpui-ui-kit-macros	Procedural macros used by gpui-ui-kit, including builder and theme derivation helpers.
gpui-toolkit	Aggregate crate and machine-readable release, stability, and vendored-patch policy manifests.
gpui-showcase	Desktop component showcase application.
gpui-showcase-android	Android native library and Gradle host for the component showcase.
gpui-showcase-ios	Static library and Swift host project for showing gpui-ui-kit on iOS, with tvOS Rust library build support.
gpui-showcase-tvos	tvOS static library and Swift host for the component showcase.

Related Assets

Path	Purpose
figma/	Figma-to-GPUI design-system rules and Code Connect mappings.
MIGRATION.md	Migration notes for moving toolkit code out of the larger SOTF workspace.
AGENTS.md	Short working guide for agents and contributors.

GPUI Version

This workspace is currently on the 0.8.x GPUI toolkit line and pins GPUI packages to Zed v1.9.0 through the root Cargo.toml.

The workspace uses local path dependencies for toolkit crates and git dependencies for GPUI platform crates from zed-industries/zed.

Common Commands

# List tasks
just --list

# Check the workspace
just check

# Build all showcase-style demo targets
just demo

# Build maintained examples by crate family
just examples

# Run focused QA
just qa-gpui-obvious

QA & Non-Regression

The full QA suite is just qa. It runs coverage, property tests, visual non-regression, performance non-regression, and the existing smoke tests:

just qa           # green canonical gate; coverage floor ratchets upward
just qa-prop      # property-based tests
just qa-visual    # visual/golden/conformance checks
just qa-perf      # benchmark non-regression against qa/perf/baseline.json
just qa-cov       # workspace coverage report (HTML + JSON)
just qa-cov-check # enforced current floor; 90% remains the release target

Update the committed performance baseline after intentional improvements:

just qa-perf-update

See qa.md for the detailed coverage and non-regression plan.

If the pinned Rust toolchain is unavailable locally, use an installed toolchain explicitly:

cargo +stable check --workspace --all-targets

Scaffolding Mini Apps

Use gpui-scaffolder to generate a small standalone GPUI app directory:

cargo run -p gpui-scaffolder -- my-app
cd my-app
cargo run

Generated projects also include a just run recipe:

just run

To create the app somewhere else, pass --output-dir:

cargo run -p gpui-scaffolder -- my-app --output-dir /tmp

Demos

The aggregate just demo builds:

• gpui-audio-kit examples
• gpui-builder layout showcase
• gpui-component-lab
• gpui-d3rs showcase and spinorama demo
• gpui-px showcase and spinorama demo
• gpui-python-runtime showcase
• gpui-themes showcase
• gpui-ui-kit showcase

Individual recipes are available as just demo-ui-kit, just demo-d3rs, just demo-px, just demo-builder, just demo-component-lab, just demo-audio-kit, just demo-python, and just demo-themes.

Examples

The aggregate just examples builds maintained example families:

just examples-audio-kit
just examples-builder
just examples-d3rs
just examples-px
just examples-ui-kit

For the QR camera example:

just run-qr-debug

On macOS this recipe creates a small .app bundle so the camera permission prompt has the right Info.plist metadata.

iOS

The iOS showcase lives in crates/gpui-showcase/ios. It builds the Rust static library and links it into the bundled Swift GPUIShowcase.xcodeproj.

# Rust static libraries
just ios-rust-sim
just ios-rust-device

# Copy static libraries into the Xcode project
just ios-build-rust-sim
just ios-build-rust-device

# Generate/update the Xcode project with XcodeGen
just ios-xcodegen

# Build the Swift host app
just ios-sim
just ios-device

# Build simulator hot-reload dylib and manifest
just ios-hot-reload

The showcase-* recipe names from the old SOTF workspace are also available, for example just showcase-build-sim.

tvOS

tvOS is a Tier 3 Rust target, so the tvOS recipes use nightly with -Zbuild-std. Install the prerequisites first:

rustup toolchain install nightly
rustup component add rust-src --toolchain nightly

Then build the showcase Rust static library for tvOS:

just tvos-rust-sim
just tvos-rust-device
just tvos-build-rust-sim
just tvos-build-rust-device
just tvos-sim
just tvos-device

This repo currently ships an iOS Swift host project. The tvOS recipes produce the Rust library artifacts and copy them next to the mobile showcase assets.

Quick Example

use gpui::*;
use gpui_ui_kit::{Button, ButtonVariant};
use gpui_px::scatter;

let button = Button::new("submit", "Submit")
    .variant(ButtonVariant::Primary)
    .on_click(|_, _| println!("Clicked"));

let chart = scatter(&x_data, &y_data)
    .title("My Data")
    .build()?;

License

ISC License