octopus: add cuda variant (#25126)

var/spack/repos/builtin/packages/octopus/package.py

@@ -8,7 +8,7 @@
 from spack import *
 
 
-class Octopus(Package):
+class Octopus(Package, CudaPackage):
     """A real-space finite-difference (time-dependent) density-functional
     theory code."""
 
@@ -114,6 +114,11 @@ def install(self, spec, prefix):
                 '--with-scalapack=%s' % spec['scalapack'].libs
             ])
 
+        if '+cuda' in spec:
+            args.extend([
+                '--enable-cuda'
+            ])
+
         # --with-etsf-io-prefix=
         # --with-sparskit=${prefix}/lib/libskit.a
         # --with-pfft-prefix=${prefix} --with-mpifftw-prefix=${prefix}