Publish to TestPyPI after wheels are built

.github/workflows/build-cibw.yml

@@ -51,3 +51,22 @@ jobs:
         with:
           name: cibw-wheels-cp${{ matrix.cibw_python_version }}-${{ matrix.platform_id }}
           path: wheelhouse/*.whl
+
+  upload_all:
+    name: Upload All
+    needs: build_wheels
+    runs-on: ubuntu-latest
+    permissions:
+      id-token: write
+    steps:
+      - name: Download Artifacts
+        uses: actions/download-artifact@v4
+        with:
+          path: dist/
+          merge-multiple: true
+
+      - name: Publish to TestPyPI
+        uses: pypa/gh-action-pypi-publish@release/v1
+        with:
+          packages-dir: dist/
+          repository-url: https://test.pypi.org/legacy/

build_tools/wheels/cibw_before_all.sh

@@ -40,4 +40,4 @@ cmake $PROJECT_DIR \
     -DCMAKE_INSTALL_PREFIX=$PROJECT_DIR/gtsam_install
 
 cd $PROJECT_DIR/build/python
-make -j$(nproc) install
+make -j $(nproc) install