Experimental s3 and parquet support

.github/workflows/build_test.yml

@@ -53,6 +53,8 @@ jobs:
             ~/.cargo
             target
             .pixi
+      - name: start minio server in the background
+        run: pixi run start-minio &
       - name: Test rust
         run: |
           pixi run test-rs --release
@@ -348,7 +350,7 @@ jobs:
           python -m pip install vegafusion-*.whl
           python -m pip install vegafusion_python_embed-*macosx_10_7_x86_64.whl
           python -m pip install pytest vega-datasets polars duckdb altair vl-convert-python scikit-image pandas==2.0
-          
+
           # Downgrade pyarrow to 10.0.1
           python -m pip install pyarrow==10.0.1
       - name: Test vegafusion

.gitignore

@@ -44,3 +44,4 @@ __pycache__
 /java/.idea/
 /.pixi/
 /python/vegafusion-jupyter/MANIFEST
+/minio_data/

BUILD.md

@@ -18,6 +18,13 @@ Then restart your shell.
 For more information on installing Pixi, see https://prefix.dev/docs/pixi/overview.
 
 ## Build and test Rust
+
+Start the test minio server in a dedicated terminal
+
+```
+pixi run start-minio
+```
+
 Build and test the VegaFusion Rust crates with:
 
 ```