ADD: relion@4.0.1 to SLES stable

env/sles15/x86_64/admin/stable/spack.yaml

@@ -5,6 +5,10 @@ spack:
   config:
     install_tree:
       root: $spack/opt/spack/stable
+      padded_length: 0
+  definitions:
+  - gcc_12.3_mpich:
+    - relion@4.0.1/ve5sish     #+cuda
   include:
     - $spack/spack-psi/env/$os/$target_family/sysconfigs/packages.yaml
     - $spack/spack-psi/env/$os/$target_family/sysconfigs/compilers.yaml
@@ -14,5 +18,9 @@ spack:
     default:
       roots:
         tcl: $spack/opt/spack/stable/modulefiles
-  specs: []
+  specs:
+  - matrix:
+    - [$gcc_12.3_mpich]
+    - ['%gcc@12.3']
+    - [^cray-mpich]
   view: false