attempt to use scotch instead of metis+parmetis

Author: cgcgcg

.github/workflows/build.yml

@@ -195,8 +195,11 @@ jobs:
     - name: Install packages
       run: |
         brew install open-mpi ccache
+        # brew tap brewsci/num
+        # brew install brewsci-metis brewsci-parmetis brewsci-suite-sparse
+        brew install scotch
         brew tap brewsci/num
-        brew install brewsci-metis brewsci-parmetis brewsci-suite-sparse
+        brew install brewsci-suite-sparse
 
     - name: Get ccache config dir
       if: always()