kokkos package: +cuda requires +wrapper when compiler is not clang (#21941)

This check is performed in cmake_args rather than with a 'conflicts'
statement because matching on !clang (i.e. any compiler that is not
clang) cannot currently be done with our spec syntax.

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

@@ -217,6 +217,11 @@ def setup_dependent_package(self, module, dependent_spec):
 
     def cmake_args(self):
         spec = self.spec
+
+        if spec.satisfies('~wrapper+cuda') and not spec.satisfies('%clang'):
+            raise InstallError("Kokkos requires +wrapper when using +cuda"
+                               "without clang")
+
         options = []
 
         isdiy = "+diy" in spec