add workflow?

Author: onurctirtir

.github/workflows/test-package-installation.yml

@@ -0,0 +1,67 @@
+name: Test Package Installation
+
+on:
+  workflow_dispatch:
+    inputs:
+      pg_major_version:
+        description: "PostgreSQL major version (e.g., 18)"
+        required: true
+        type: string
+      citus_major_minor_version:
+        description: "Citus major.minor version (e.g., 14.0)"
+        required: true
+        type: string
+
+env:
+  # Branch whose build-package.yml defines the canonical platform list
+  SOURCE_BRANCH: "all-citus"
+
+jobs:
+  discover_platforms:
+    name: Discover supported platforms
+    runs-on: ubuntu-latest
+    outputs:
+      matrix: ${{ steps.extract.outputs.matrix }}
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Extract platform list from build-package.yml
+        id: extract
+        run: |
+          # Fetch only the all-citus branch (shallow) to read its build-package.yml
+          git fetch origin "${SOURCE_BRANCH}" --depth=1
+          git show "origin/${SOURCE_BRANCH}:.github/workflows/build-package.yml" \
+            > /tmp/build-package.yml
+
+          # Pull the platform array and compact it into a single-line JSON string
+          platforms=$(
+            yq -o=json '.jobs.build_package.strategy.matrix.platform' /tmp/build-package.yml \
+            | jq -c '.'
+          )
+
+          echo "Discovered platforms: ${platforms}"
+          echo "matrix={\"platform\": ${platforms}}" >> "$GITHUB_OUTPUT"
+
+  test_package:
+    name: "Test ${{ matrix.platform }}"
+    needs: discover_platforms
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix: ${{ fromJson(needs.discover_platforms.outputs.matrix) }}
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: ">=3.10"
+
+      - name: Run package installation test
+        run: |
+          python3 test_package_installation/run_test.py \
+            "${{ matrix.platform }}" \
+            "${{ inputs.pg_major_version }}" \
+            "${{ inputs.citus_major_minor_version }}"