fix with rsync

Author: th-skam

.github/workflows/ci.yml

@@ -40,11 +40,12 @@ jobs:
             -DCMAKE_INSTALL_PREFIX=$GITHUB_WORKSPACE/install/CollisionAlgorithm \
             ..
           ninja install
-          # Fix include path for ConstraintGeometry
-          mkdir -p $GITHUB_WORKSPACE/install/CollisionAlgorithm/include/CollisionAlgorithm
-          rsync -a $GITHUB_WORKSPACE/install/CollisionAlgorithm/include/include/CollisionAlgorithm/ \
-          $GITHUB_WORKSPACE/install/CollisionAlgorithm/include/CollisionAlgorithm/
-          rm -rf $GITHUB_WORKSPACE/install/CollisionAlgorithm/include/include
+          # Flatten the CollisionAlgorithm install structure
+          INCLUDE_DIR="$GITHUB_WORKSPACE/install/CollisionAlgorithm/include/CollisionAlgorithm"
+          if [ -d "$INCLUDE_DIR/CollisionAlgorithm" ]; then
+            rsync -a "$INCLUDE_DIR/CollisionAlgorithm/" "$INCLUDE_DIR/"
+            rm -rf "$INCLUDE_DIR/CollisionAlgorithm"
+          fi
           ls -R $GITHUB_WORKSPACE/install/CollisionAlgorithm/include
           
       - name: Checkout source code