Allow running "verify release candidate" github workflow on Windows

.github/workflows/verify-release-candidate.yml

@@ -58,10 +58,10 @@ jobs:
             arch: x64
             runner: macos-15-intel
 
-          # Windows (disabled for now)
-          # - os: windows
-          #   arch: x64
-          #   runner: windows-latest
+          # Windows
+          - os: windows
+            arch: x64
+            runner: windows-latest
     runs-on: ${{ matrix.runner }}
     steps:
       - name: Checkout repository

dev/release/README.md

@@ -158,7 +158,7 @@ python3 -m twine upload --repository testpypi dist/datafusion-0.7.0.tar.gz
 
 Before sending the vote email, run the manually triggered GitHub Actions workflow
 "Verify Release Candidate" and confirm all matrix jobs pass across the OS/architecture matrix
-(for example, Linux and macOS runners):
+(for example, Linux, macOS, and Windows runners):
 
 1. Go to https://github.com/apache/datafusion-python/actions/workflows/verify-release-candidate.yml
 2. Click "Run workflow"

dev/release/verify-release-candidate.sh

@@ -112,8 +112,17 @@ test_source_distribution() {
 
   curl https://sh.rustup.rs -sSf | sh -s -- -y --no-modify-path
 
-  export PATH=$RUSTUP_HOME/bin:$PATH
-  source $RUSTUP_HOME/env
+  # On Unix, rustup creates an env file. On Windows GitHub runners (MSYS bash),
+  # that file may not exist, so fall back to adding Cargo bin directly.
+  if [ -f "$CARGO_HOME/env" ]; then
+    # shellcheck disable=SC1090
+    source "$CARGO_HOME/env"
+  elif [ -f "$RUSTUP_HOME/env" ]; then
+    # shellcheck disable=SC1090
+    source "$RUSTUP_HOME/env"
+  else
+    export PATH="$CARGO_HOME/bin:$PATH"
+  fi
 
   # build and test rust
 
@@ -126,10 +135,20 @@ test_source_distribution() {
   git clone https://github.com/apache/parquet-testing.git parquet-testing
 
   python3 -m venv .venv
-  source .venv/bin/activate
-  python3 -m pip install -U pip
-  python3 -m pip install -U maturin
-  maturin develop
+  if [ -x ".venv/bin/python" ]; then
+    VENV_PYTHON=".venv/bin/python"
+  elif [ -x ".venv/Scripts/python.exe" ]; then
+    VENV_PYTHON=".venv/Scripts/python.exe"
+  elif [ -x ".venv/Scripts/python" ]; then
+    VENV_PYTHON=".venv/Scripts/python"
+  else
+    echo "Unable to find python executable in virtual environment"
+    exit 1
+  fi
+
+  "$VENV_PYTHON" -m pip install -U pip
+  "$VENV_PYTHON" -m pip install -U maturin
+  "$VENV_PYTHON" -m maturin develop
 
   #TODO: we should really run tests here as well
   #python3 -m pytest