Try this

Author: michaelpj

.github/actions/setup-build/action.yml

@@ -24,8 +24,11 @@ runs:
   using: "composite"
   steps:
     - name: Workaround runner image issue
+      if: runner.os == 'Linux'
       # https://github.com/actions/runner-images/issues/7061
-      run: sudo chown -R $USER /usr/local/.ghcup
+      run: | 
+        sudo mkdir -p /usr/local/.ghcup
+        sudo chown -R $USER /usr/local/.ghcup
       shell: bash
 
     - uses: haskell/actions/[email protected]