Pyodide build action, attempt 1

.github/workflows/pyodide.yml

@@ -0,0 +1,54 @@
+name: Pyodide Build
+
+on:
+  pull_request:
+    paths:
+      - crosshair/**
+      - setup.py
+      - .pre-commit-config.yaml
+  push:
+    branches: [ main ]
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    runs-on: ubuntu-24.04
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+
+    - name: Setup packages
+      run: sudo apt-get update && sudo apt-get install -y python3-dev python3-pip python3-venv 
+
+    - name: Install dependencies
+      run: |
+        python3 -m pip install --upgrade pip setuptools
+        pip3 install pyodide-build pyodide-cli
+      
+    - name: Configure CMake and build
+      run:  |
+         git clone https://github.com/emscripten-core/emsdk.git ~/emsdk 
+         cd ~/emsdk && PYODIDE_EMSCRIPTEN_VERSION=$(~/env/bin/pyodide config get emscripten_version) 
+         ./emsdk install ${PYODIDE_EMSCRIPTEN_VERSION} 
+         ./emsdk activate ${PYODIDE_EMSCRIPTEN_VERSION}
+         
+    - name: Build CrossHair
+      run: |
+        source ~/emsdk/emsdk_env.sh 
+        ~/env/bin/pyodide build
+         
+    - name: Setup env-pyodide
+      run: |
+         source ~/env/bin/activate 
+         source ~/emsdk/emsdk_env.sh 
+         pyodide venv ~/env-pyodide
+         
+
+    - name: Upload wheel
+      uses: actions/upload-artifact@master
+      with:
+          name: pyodide-wheel
+          path: dist/*.whl