Moving hypre constraint

stacks/pinot-noir/packages_jed.yaml

@@ -20,9 +20,6 @@ packages:
     - spec: 'hcoll@4.8.3227'
       prefix: /usr
 
-  hypre:
-    prefer: ['+unified-memory', '+magma']
-
   openmpi:
     require:
       - spec: 'fabrics=hcoll'

stacks/pinot-noir/packages_stack.yaml

@@ -56,6 +56,11 @@ packages:
   hdf5:
     require: ['+hl', '+threadsafe', '+szip', '+cxx', '+fortran']
 
+  hypre:
+    require:
+      - spec: '+unified-memory +magma'
+        when: '+cuda'
+
   intel-oneapi-mkl:
     prefer: ['+cluster']