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feat: add Run 2.0 experimental WASI component runtime
Run 2.0 introduces WASI 0.2 component support as an opt-in experimental feature. Access via `run v2 --help`. New features: - Cross-language component composition via WIT interfaces - Instant startup (<10ms cold start) - Hermetic, reproducible builds with toolchain lockfile - Edge deployment (Cloudflare, AWS Lambda, Vercel) - Docker Compose migration support - Hot reload development server New files: - src/v2/ - Core v2 runtime implementation - registry-server/ - Self-hosted component registry - examples/v2/ - Working examples and templates - MIGRATION.md - Docker to Run 2.0 migration guide - bench/, benches/, benchmarks/ - Performance testing Version bump: 0.3.2 -> 0.4.0
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‎.github/workflows/docker.yml‎

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name: Docker Compatibility
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# Manual-only until Docker bridge is fully implemented
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on:
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workflow_dispatch:
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jobs:
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docker-bridge:
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name: Docker Bridge Tests
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runs-on: ubuntu-latest
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steps:
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- uses: actions/checkout@v4
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- uses: dtolnay/rust-toolchain@stable
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- name: Install Docker
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run: |
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sudo apt-get update
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sudo apt-get install -y docker.io
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sudo systemctl start docker
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- name: Build Run CLI
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run: cargo build --features v2 --release
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- name: Test Docker availability
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run: |
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cargo run --features v2 -- info
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- name: Start Docker service via Run
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run: |
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cargo run --features v2 -- dev --bridge postgres
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- name: Test hybrid Run + Docker
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run: |
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cargo test --features v2 --test docker_bridge
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compose-migration:
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name: Docker Compose Migration
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runs-on: ubuntu-latest
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steps:
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- uses: actions/checkout@v4
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- uses: dtolnay/rust-toolchain@stable
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- name: Install Docker Compose
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run: |
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sudo apt-get update
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sudo apt-get install -y docker-compose
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- name: Build Run CLI
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run: cargo build --features v2 --release
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- name: Create sample docker-compose.yml
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run: |
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cat > docker-compose.yml << 'EOF'
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version: '3'
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services:
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db:
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image: postgres:15
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environment:
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POSTGRES_PASSWORD: secret
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app:
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build: .
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depends_on:
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- db
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EOF
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- name: Migrate compose to run.toml
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run: |
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cargo run --features v2 -- compose migrate docker-compose.yml run.toml
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- name: Verify migration
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run: |
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cat run.toml
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cargo run --features v2 -- info

‎.github/workflows/edge.yml‎

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name: Edge Deployment
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# Manual-only until edge deployment is fully implemented
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on:
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workflow_dispatch:
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jobs:
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cloudflare-deploy:
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name: Deploy to Cloudflare Workers
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runs-on: ubuntu-latest
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if: github.event_name == 'workflow_dispatch'
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steps:
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- uses: actions/checkout@v4
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- uses: dtolnay/rust-toolchain@stable
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- name: Install wasm-tools
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run: cargo install wasm-tools
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- name: Install Wrangler
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run: npm install -g wrangler
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- name: Build Run CLI
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run: cargo build --features v2 --release
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- name: Build WASI component
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run: |
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cargo run --features v2 -- build --release
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- name: Deploy to Cloudflare
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env:
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CLOUDFLARE_API_TOKEN: ${{ secrets.CLOUDFLARE_API_TOKEN }}
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run: |
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cargo run --features v2 -- deploy --target edge --provider cloudflare
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aws-lambda-deploy:
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name: Deploy to AWS Lambda
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runs-on: ubuntu-latest
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if: github.event_name == 'workflow_dispatch'
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steps:
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- uses: actions/checkout@v4
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- uses: dtolnay/rust-toolchain@stable
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- name: Install wasm-tools
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run: cargo install wasm-tools
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- name: Install AWS CLI
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run: |
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curl "https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip" -o "awscliv2.zip"
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unzip awscliv2.zip
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sudo ./aws/install
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- name: Build Run CLI
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run: cargo build --features v2 --release
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- name: Build WASI component
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run: |
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cargo run --features v2 -- build --release
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- name: Deploy to AWS Lambda
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env:
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AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
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AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
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AWS_REGION: us-east-1
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run: |
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cargo run --features v2 -- deploy --target edge --provider aws-lambda
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vercel-deploy:
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name: Deploy to Vercel
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runs-on: ubuntu-latest
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if: github.event_name == 'workflow_dispatch'
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steps:
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- uses: actions/checkout@v4
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- uses: dtolnay/rust-toolchain@stable
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- name: Install wasm-tools
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run: cargo install wasm-tools
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- name: Install Vercel CLI
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run: npm install -g vercel
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- name: Build Run CLI
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run: cargo build --features v2 --release
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- name: Build WASI component
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run: |
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cargo run --features v2 -- build --release
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- name: Deploy to Vercel
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env:
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VERCEL_TOKEN: ${{ secrets.VERCEL_TOKEN }}
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run: |
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cargo run --features v2 -- deploy --target edge --provider vercel
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edge-smoke-test:
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name: Edge Deployment Smoke Test
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runs-on: ubuntu-latest
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steps:
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- uses: actions/checkout@v4
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- uses: dtolnay/rust-toolchain@stable
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- name: Install wasm-tools
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run: cargo install wasm-tools
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- name: Build Run CLI
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run: cargo build --features v2 --release
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- name: Build test component
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run: |
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cargo run --features v2 -- build --release
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- name: Test edge manifest generation
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run: |
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cargo run --features v2 -- deploy --target edge --provider cloudflare --dry-run
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- name: Verify manifest
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run: |
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test -f target/deploy/edge-manifest.json
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cat target/deploy/edge-manifest.json

‎.github/workflows/release.yml‎

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targets: ${{ matrix.target }}
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- name: Build release binary
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run: cargo build --locked --release --target ${{ matrix.target }}
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run: cargo build --locked --release --target ${{ matrix.target }} --features v2
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- name: Install cargo-deb
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- name: Build Debian package
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if: matrix.target == 'x86_64-unknown-linux-gnu'
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run: |
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cargo deb --target ${{ matrix.target }}
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cargo deb --target ${{ matrix.target }} -- --features v2
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mkdir -p artifacts
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DEB_PATH=$(find target/${{ matrix.target }}/debian -maxdepth 1 -name "*.deb" | head -n 1)
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cp "$DEB_PATH" "artifacts/$(basename "$DEB_PATH")"
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- name: Publish crate to crates.io
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env:
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CARGO_REGISTRY_TOKEN: ${{ secrets.CRATES_IO_TOKEN }}
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run: cargo publish --locked
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run: cargo publish --locked --features v2
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release:
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name: Publish release

‎.gitignore‎

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# Build artifacts
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/target
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/.vscode
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registry-server/target/
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# IDE
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/.vscode
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.idea/
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*.iml
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# Editor swap files
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**/*.swp
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**/*.swo
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# OS files
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**/.DS_Store
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# Python
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**/.venv/
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**/__pycache__/
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*.pyc
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# Rust
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*.rlib
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*.rmeta
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# WebAssembly binaries (build from source)
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*.wasm
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# Logs
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*.log
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# Exclude incomplete/redundant directories
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runtime/
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examples/swap-demo/

‎CHANGELOG.md‎

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Nothing yet.
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## [0.4.0] - 2026-02-05
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### Added
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- Run 2.0 experimental preview (WASI 0.2 runtime, component orchestration, dev server, registry server).
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- Run 2.0 documentation and migration guide with explicit opt-in via `run v2`.
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### Changed
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- Default registry URL now points to `https://registry.esubalew.dev`.
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## [0.3.2] - 2026-01-05
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### Fixed
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- `-c/--code` and `-f/--file` flags are accepted immediately after the language selector without consuming snippet text.
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- Added regression coverage ensuring `run python -c` continues to consume piped input in future releases.
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[Unreleased]: https://github.com/Esubaalew/run/compare/v0.3.2...HEAD
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[0.3.2]: https://github.com/Esubaalew/run/compare/v0.3.1...v0.3.2
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[0.3.1]: https://github.com/Esubaalew/run/compare/v0.3.0...v0.3.1
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[0.3.0]: https://github.com/Esubaalew/run/compare/v0.2.1...v0.3.0
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[0.2.1]: https://github.com/Esubaalew/run/compare/v0.2.0...v0.2.1
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[0.2.0]: https://github.com/Esubaalew/run/compare/v0.1.1...v0.2.0
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[0.1.1]: https://github.com/Esubaalew/run/compare/v0.1.0...v0.1.1
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[0.1.0]: https://github.com/Esubaalew/run/releases/tag/v0.1.0
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[Unreleased]: https://github.com/esubaalew/run/compare/v0.4.0...HEAD
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[0.4.0]: https://github.com/esubaalew/run/compare/v0.3.2...v0.4.0
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[0.3.2]: https://github.com/esubaalew/run/compare/v0.3.1...v0.3.2
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[0.3.1]: https://github.com/esubaalew/run/compare/v0.3.0...v0.3.1
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[0.3.0]: https://github.com/esubaalew/run/compare/v0.2.1...v0.3.0
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[0.2.1]: https://github.com/esubaalew/run/compare/v0.2.0...v0.2.1
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[0.2.0]: https://github.com/esubaalew/run/compare/v0.1.1...v0.2.0
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[0.1.1]: https://github.com/esubaalew/run/compare/v0.1.0...v0.1.1
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[0.1.0]: https://github.com/esubaalew/run/releases/tag/v0.1.0

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