first draft

.github/workflows/downstream_tests.yml

@@ -181,3 +181,38 @@ jobs:
         run: |
             cd py-shiny
             make narwhals-test-integration
+    
+  vegafusion:
+     env:
+       UV_SYSTEM_PYTHON: true
+
+     strategy:
+       matrix:
+         python-version: ["3.12"]
+         os: [ubuntu-latest]
+
+     runs-on: ${{ matrix.os }}
+     steps:
+        - uses: actions/checkout@v4
+        - uses: actions/setup-python@v5
+          with:
+            python-version: ${{ matrix.python-version }}
+        - name: Install uv
+          uses: astral-sh/setup-uv@v3
+          with:
+            enable-cache: "true"
+            cache-suffix: ${{ matrix.python-version }}
+            cache-dependency-glob: "**requirements*.txt"
+        - uses: prefix-dev/setup-pixi@v0.8.1
+          with:
+            pixi-version: v0.27.1
+        - name: clone-vegafusion
+          run: |
+              git clone https://github.com/vega/vegafusion.git --depth=1
+              cd vegafusion
+              git log
+        - name: Build vegafusion wheel
+          run: |
+              cd vegafusion    
+              pixi run build-py-vegafusion
+