fix macos python test build

Author: ozguronsoy

.github/workflows/tests.yaml

@@ -101,14 +101,20 @@ jobs:
         shell: bash
         run: |
           brew install llvm@18
-          
           LLVM_PREFIX=$(brew --prefix llvm@18)
           CLANG_LIB_DIR="$LLVM_PREFIX/lib"
+          CLANG_DYLIB="$CLANG_LIB_DIR/libclang.dylib"
+          
+          if [ ! -f "$CLANG_DYLIB" ]; then
+            echo "::error::Could not find libclang.dylib at $CLANG_DYLIB"
+            exit 1
+          fi
+
           QT_LIB_DIR=$(qtpaths --query QT_INSTALL_LIBS)
 
-          echo "Detected LLVM Root: $LLVM_PREFIX"
           echo "LLVM_INSTALL_DIR=$LLVM_PREFIX" >> $GITHUB_ENV
           echo "CLANG_INSTALL_DIR=$LLVM_PREFIX" >> $GITHUB_ENV
+          echo "LIBCLANG_PATH=$CLANG_DYLIB" >> $GITHUB_ENV
           echo "SDKROOT=$(xcrun --show-sdk-path)" >> $GITHUB_ENV
           echo "$LLVM_PREFIX/bin" >> $GITHUB_PATH
           echo "DYLD_LIBRARY_PATH=$CLANG_LIB_DIR:$QT_LIB_DIR:$DYLD_LIBRARY_PATH" >> $GITHUB_ENV