Try installing Spack without specialized action

Author: berquist

.github/workflows/build-spack-nodeps.yml

@@ -23,10 +23,10 @@ jobs:
         uses: actions/checkout@v4
         with:
           repository: spack/spack
-          path: /opt/spack
+          path: spack
       - name: Add Spack to PATH
         run: |
-          echo /opt/spack/bin >> "${GITHUB_PATH}"
+          echo "${PWD}/spack/bin" >> "${GITHUB_PATH}"
       - name: Install sst-core, sst-elements, and sst-macro
         run: |
           echo "PATH: ${PATH}"