bump pyodide used in tests to 0.29

Author: davidhewitt

.github/workflows/ci.yml

@@ -422,27 +422,14 @@ jobs:
         shell: msys2 {0}
         run: PATH="$PATH:/c/Users/runneradmin/.cargo/bin" nox -s test-examples
 
-  test-emscripten:
-    name: Test Emscripten
-    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v6
+      - uses: astral-sh/setup-uv@v7
       - uses: actions/setup-node@v6
         with:
-          node-version: 18
+          node-version: 22
       - run: |
-          PYODIDE_VERSION=0.21.0
-
-          cd emscripten
-          npm i pyodide@0.21.0
-          cd node_modules/pyodide/
-          npx -y prettier -w pyodide.asm.js
-          EMSCRIPTEN_VERSION=$(node -p "require('./repodata.json').info.platform.split('_').slice(1).join('.')")
-          PYTHON_VERSION=3.10
-
-          echo "PYODIDE_VERSION=$PYODIDE_VERSION" >> $GITHUB_ENV
-          echo "EMSCRIPTEN_VERSION=$EMSCRIPTEN_VERSION" >> $GITHUB_ENV
-          echo "PYTHON_VERSION=$PYTHON_VERSION" >> $GITHUB_ENV
+          uvx nox -s install-pyodide-emscripten
           echo "ORIG_PATH=$PATH" >> $GITHUB_ENV
       - uses: dtolnay/rust-toolchain@nightly
         with:
@@ -452,11 +439,6 @@ jobs:
         with:
           version: ${{env.EMSCRIPTEN_VERSION}}
           actions-cache-folder: emsdk-cache
-      - uses: actions/setup-python@v6
-        id: setup-python
-        with:
-          python-version: ${{env.PYTHON_VERSION}}
-      - run: pip install nox
       - uses: actions/cache@v5
         with:
           path: |
@@ -466,4 +448,6 @@ jobs:
       - name: Test
         run: |
           export PATH=$ORIG_PATH:$PATH
-          nox -s test-examples-emscripten
+          uvx nox -s test-examples-emscripten
+        with:
+          UV_PYTHON: ${{ env.PYTHON_VERSION }}

emscripten/get_emscripten_version.js

@@ -0,0 +1,8 @@
+import { loadPyodide } from "pyodide";
+
+const pyodide = await loadPyodide();
+
+pyodide.runPython(`
+import platform
+print(platform.platform().split("-")[1])
+`);

emscripten/get_python_version.js

@@ -0,0 +1,9 @@
+import { loadPyodide } from "pyodide";
+
+const pyodide = await loadPyodide();
+
+pyodide.runPython(`
+import sys
+major, minor = sys.version_info[:2]
+print(f"{major}.{minor}")
+`);

emscripten/package-lock.json

@@ -0,0 +1,6 @@
+{
+  "type": "module",
+  "dependencies": {
+    "pyodide": "^0.29.1"
+  }
+}

emscripten/package.json

@@ -1,9 +1,11 @@
 import os
+from contextlib import ExitStack
 from inspect import cleandoc as heredoc
 from glob import glob
 from pathlib import Path
 import shutil
 import sys
+import json
 
 import nox
 import nox.command
@@ -227,10 +229,34 @@ def test(session: nox.Session):
     session.run("pytest", "setuptools_rust", "tests", *session.posargs)
 
 
+PYODIDE_VERSION = "0.29.1"
+EMSCRIPTEN_DIR = Path("./emscripten").resolve()
+
+
+@nox.session(name="install-pyodide-emscripten")
+def install_pyodide_emscripten(session: nox.Session):
+    with session.chdir(EMSCRIPTEN_DIR):
+        session.run("npm", "install", f"pyodide@{PYODIDE_VERSION}", external=True)
+        emscripten_version = session.run("node", "get_emscripten_version.js", external=True, silent=True).strip()
+        python_version = session.run("node", "get_python_version.js", external=True, silent=True).strip()
+
+    with ExitStack() as stack:
+        if "GITHUB_ENV" in os.environ:
+            out = stack.enter_context(open(os.environ["GITHUB_ENV"], "a"))
+        else:
+            out = sys.stdout
+
+        print(f"PYODIDE_VERSION={PYODIDE_VERSION}", file=out)
+        print(f"EMSCRIPTEN_VERSION={emscripten_version}", file=out)
+        print(f"PYTHON_VERSION={python_version}", file=out)
+
+        if "GITHUB_ENV" not in os.environ:
+            print("You will need to install emscripten yourself to match the target version.")
+
+
 @nox.session(name="test-examples-emscripten")
 def test_examples_emscripten(session: nox.Session):
     session.install(".", "build")
-    emscripten_dir = Path("./emscripten").resolve()
 
     session.run(
         "rustup",
@@ -250,20 +276,20 @@ def test_examples_emscripten(session: nox.Session):
         env = os.environ.copy()
         env.update(
             RUSTUP_TOOLCHAIN="nightly",
-            PYTHONPATH=str(emscripten_dir),
+            PYTHONPATH=str(EMSCRIPTEN_DIR),
             _PYTHON_SYSCONFIGDATA_NAME="_sysconfigdata__emscripten_wasm32-emscripten",
             _PYTHON_HOST_PLATFORM="emscripten_3_1_14_wasm32",
             CARGO_BUILD_TARGET="wasm32-unknown-emscripten",
             CARGO_TARGET_WASM32_UNKNOWN_EMSCRIPTEN_LINKER=str(
-                emscripten_dir / "emcc_wrapper.py"
+                EMSCRIPTEN_DIR / "emcc_wrapper.py"
             ),
-            PYO3_CONFIG_FILE=str(emscripten_dir / "pyo3_config.ini"),
+            PYO3_CONFIG_FILE=str(EMSCRIPTEN_DIR / "pyo3_config.ini"),
         )
         with session.chdir(example):
             cmd = ["python", "-m", "build", "--wheel", "--no-isolation"]
             session.run(*cmd, env=env, external=True)
 
-        with session.chdir(emscripten_dir):
+        with session.chdir(EMSCRIPTEN_DIR):
             session.run("node", "runner.js", str(example), external=True)