add support for the wasm32-wasip3 target and ABI

.github/workflows/release.yaml

@@ -19,48 +19,6 @@ permissions:
   pull-requests: write
 
 jobs:
-  linux:
-    name: Populate cache
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-        with:
-          submodules: "recursive"
-
-      - uses: actions/setup-python@v5
-        with:
-          python-version: "3.14.0"
-
-      - name: Install latest Rust stable toolchain
-        uses: dtolnay/rust-toolchain@stable
-        with:
-          targets: wasm32-wasip2
-          components: clippy, rustfmt
-
-      - uses: Swatinem/rust-cache@v2
-        with:
-          shared-key: "rust-cache-${{ hashFiles('./Cargo.lock') }}"
-          cache-on-failure: false
-
-      - name: Install WASI-SDK
-        shell: bash
-        run: |
-          cd /tmp
-          curl -LO https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-${WASI_SDK_VERSION}/wasi-sdk-${WASI_SDK_VERSION}.0-x86_64-linux.tar.gz
-          tar xf wasi-sdk-${WASI_SDK_VERSION}.0-x86_64-linux.tar.gz
-          mv wasi-sdk-${WASI_SDK_VERSION}.0-x86_64-linux /opt/wasi-sdk
-
-      - name: Build
-        shell: bash
-        run: cargo build --release
-
-      - name: Upload CPython builddir
-        uses: actions/upload-artifact@v4
-        with:
-          name: cpython-wasi
-          path: cpython/builddir/wasi
-
   release:
     name: Build and release
     needs: linux
@@ -174,12 +132,6 @@ jobs:
         shell: bash
         run: echo "WASI_SDK_PATH=$(cygpath -m /tmp/wasi-sdk-${WASI_SDK_VERSION}.0-${{ matrix.config.wasiSDK }})" >> ${GITHUB_ENV}
 
-      - name: Restore CPython
-        uses: actions/download-artifact@v5
-        with:
-          name: cpython-wasi
-          path: cpython/builddir/wasi
-
       - name: Build wheels
         uses: PyO3/maturin-action@v1
         with:

.github/workflows/test.yaml

@@ -17,48 +17,6 @@ env:
   WASI_SDK_VERSION: 34
 
 jobs:
-  linux:
-    name: Populate cache
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-        with:
-          submodules: "recursive"
-
-      - uses: actions/setup-python@v5
-        with:
-          python-version: "3.14.0"
-
-      - name: Install latest Rust stable toolchain
-        uses: dtolnay/rust-toolchain@stable
-        with:
-          targets: wasm32-wasip2
-          components: clippy, rustfmt
-
-      - uses: Swatinem/rust-cache@v2
-        with:
-          shared-key: "rust-cache-${{ hashFiles('./Cargo.lock') }}"
-          cache-on-failure: false
-
-      - name: Install WASI-SDK
-        shell: bash
-        run: |
-          cd /tmp
-          curl -LO https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-${WASI_SDK_VERSION}/wasi-sdk-${WASI_SDK_VERSION}.0-x86_64-linux.tar.gz
-          tar xf wasi-sdk-${WASI_SDK_VERSION}.0-x86_64-linux.tar.gz
-          mv wasi-sdk-${WASI_SDK_VERSION}.0-x86_64-linux /opt/wasi-sdk
-
-      - name: Build
-        shell: bash
-        run: cargo build --release
-
-      - name: Upload CPython builddir
-        uses: actions/upload-artifact@v4
-        with:
-          name: cpython-wasi
-          path: cpython/builddir/wasi
-
   test:
     name: Test
     needs: linux
@@ -104,12 +62,6 @@ jobs:
         shell: bash
         run: echo "WASI_SDK_PATH=$(cygpath -m /tmp/wasi-sdk-${WASI_SDK_VERSION}.0-${{ matrix.config.wasiSDK }})" >> ${GITHUB_ENV}
 
-      - name: Restore CPython
-        uses: actions/download-artifact@v5
-        with:
-          name: cpython-wasi
-          path: cpython/builddir/wasi
-
       - name: Lint
         shell: bash
         run: bash .github/workflows/lint.sh

CONTRIBUTING.md

@@ -34,16 +34,16 @@ First, make sure you've got all the submodules cloned.
 git submodule update --init --recursive
 ```
 
-Next, install WASI-SDK 33 to `/opt/wasi-sdk` (alternatively, you can specify a
+Next, install WASI-SDK 34 to `/opt/wasi-sdk` (alternatively, you can specify a
 different location and reference it later using the `WASI_SDK_PATH` environment
 variable).  Replace `arm64-linux` with `x86_64-linux`, `arm64-macos`,
 `x86_64-macos`, `arm64-windows`, or `x86_64-windows` below depending on your
 architecure and OS, if necessary.
 
 ```shell
-curl -LO https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-33/wasi-sdk-33.0-arm64-linux.tar.gz
-tar xf wasi-sdk-33.0-arm64-linux.tar.gz
-sudo mv wasi-sdk-33.0-arm64-linux /opt/wasi-sdk
+curl -LO https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-34/wasi-sdk-34.0-arm64-linux.tar.gz
+tar xf wasi-sdk-34.0-arm64-linux.tar.gz
+sudo mv wasi-sdk-34.0-arm64-linux /opt/wasi-sdk
 export WASI_SDK_PATH=/opt/wasi-sdk
 ```
 

Cargo.toml

@@ -31,7 +31,8 @@ pyo3 = { version = "0.28.3", features = [
 wasmtime = "48.0.0"
 wasmtime-wasi = { version = "48.0.0", features = [ "p3" ] }
 once_cell = "1.20.2"
-component-init-transform = "0.2.0"
+# TODO: publish a release to crates.io and use it:
+component-init-transform = { git = "https://github.com/dicej/component-init", rev = "d8bad1bf" }
 async-trait = "0.1.83"
 futures = "0.3.31"
 tokio = { version = "1.41.0", features = [