Change to build source dist only

.github/workflows/build-publish-test.yml

@@ -1,6 +1,5 @@
 # Build package & publish a release to PyPI (test)
-# Given a tag, downloads the associated code, builds the package, and uploads the binary wheel(s)
-# and source tarball as artifacts
+# Given a tag, downloads the associated code, builds the package, and uploads the source tarball as artifact
 # This version releases to https://test.pypi.org/ for testing purposes
 # Triggers on: all published releases (incl pre-releases)
 
@@ -15,21 +14,19 @@ permissions:
 
 jobs:
   build:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - name: Set up Python 3.10
+      - name: Set up Python
         uses: actions/setup-python@v5
         with:
-          python-version: "3.10"
-      - name: Install system dependencies for graphcut functionality
-        run: sudo apt-get install -y libboost-python-dev build-essential
+          python-version: 3.x
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
           pip install build
-      - name: Build a binary wheel and a source tarball
-        run: python -m build
+      - name: Build a source tarball
+        run: python -m build --sdist
       - name: Store the distribution packages
         uses: actions/upload-artifact@v4.3.0
         with: