upgrade compilers

Author: briantoby

.github/workflows/mac_test.yml

@@ -45,7 +45,7 @@ jobs:
 
       # run pixi command
       - name: upgrade 
-        run: pixi upgrade compilers clang
+        run: pixi upgrade compilers clang --manifest-path pixi/pixi.toml
 
       - name: see-upgrade
         run: git diff