Add Spack recipe

.gitlab-ci.yml

@@ -53,6 +53,7 @@ test:no_cgal:
   stage: test
   image: $CI_REGISTRY_IMAGE:latest
   needs: ['build-img']
+  when: manual
   script:
     - /usr/local/spack/bin/spack repo add .spack/repo
     - /usr/local/spack/bin/spack install csg-eb ${NO_CSG}