Python: Downgrade protobuf dependency to >=3.20

.github/workflows/pypi-cd.yml

@@ -188,9 +188,55 @@ jobs:
                   publish: "true"
                   github-token: ${{ secrets.GITHUB_TOKEN }}
 
+            - name: Install protoc 3.20.0
+              run: |
+                  PB_REL="https://github.com/protocolbuffers/protobuf/releases"
+
+                  OS=$(uname -s)
+                  ARCH=$(uname -m)
+
+                  # Determine OS prefix
+                  if [[ "$OS" == "Linux" ]]; then
+                    OS_PREFIX="linux"
+                  elif [[ "$OS" == "Darwin" ]]; then
+                    OS_PREFIX="osx"
+                  else
+                    echo "Unsupported OS: $OS"
+                    exit 1
+                  fi
+
+                  # Determine architecture
+                  if [[ "$ARCH" == "x86_64" ]]; then
+                    PROTOC_ARCH="x86_64"
+                  elif [[ "$ARCH" == "aarch64" || "$ARCH" == "arm64" ]]; then
+                    PROTOC_ARCH="aarch_64"
+                  else
+                    echo "Unsupported architecture: $ARCH"
+                    exit 1
+                  fi
+
+                  # Use 3.20.0 (has all platform binaries including osx-aarch_64)
+                  PROTOC_ZIP="protoc-3.20.0-${OS_PREFIX}-${PROTOC_ARCH}.zip"
+                  echo "Downloading: $PROTOC_ZIP"
+
+                  curl -LO "$PB_REL/download/v3.20.0/$PROTOC_ZIP"
+
+                  # Install to a custom directory, not /usr/local
+                  sudo mkdir -p /opt/protoc
+                  sudo unzip -o "$PROTOC_ZIP" -d /opt/protoc
+
+                  # Add only the protoc bin directory to PATH
+                  echo "/opt/protoc/bin" >> $GITHUB_PATH
+
+                  /opt/protoc/bin/protoc --version
+
             - name: Generate protobuf files
               working-directory: ./python
               run: |
+                  # Verify correct protoc is used
+                  which protoc
+                  protoc --version
+
                   python3 dev.py protobuf
 
             - name: Include protobuf files in the package

python/glide-async/pyproject.toml

@@ -7,7 +7,7 @@ dependencies = [
     # Note: If you add a dependency here, make sure to also add it to glide-async/requirements.txt
     # Once issue https://github.com/aboutcode-org/python-inspector/issues/197 is resolved, the requirements.txt file can be removed.
     "anyio>=4.9.0",
-    "protobuf>=6.20",
+    "protobuf>=3.20",
     "sniffio",
     "typing-extensions>=4.8.0; python_version < '3.11'",
 ]

python/glide-shared/pyproject.toml

@@ -5,7 +5,7 @@ description = "Shared code for GLIDE Python clients"
 dependencies = [
     # ⚠️  Note: If you add a dependency here, make sure to also add it to the requirements.txt files under glide-async and glide-sync.
     # Once issue https://github.com/aboutcode-org/python-inspector/issues/197 is resolved, the requirements.txt file can be removed.
-    "protobuf>=6.20",
+    "protobuf>=3.20",
     "typing-extensions>=4.8.0; python_version < '3.11'",
 ]