henson: new package (#9657)

* henson: new package

* henson: change github path to henson-insitu

* henson: make mpi-wrappers=off by default

* henson: remove unsued variable and spaces to make linter happy

* henson: rename version master to develop

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

@@ -0,0 +1,38 @@
+# Copyright 2013-2018 Lawrence Livermore National Security, LLC and other
+# Spack Project Developers. See the top-level COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+from spack import *
+
+
+class Henson(CMakePackage):
+    """Cooperative multitasking for in situ processing."""
+
+    homepage = "https://github.com/henson-insitu/henson"
+    url      = "https://github.com/henson-insitu/henson"
+    git      = "https://github.com/henson-insitu/henson.git"
+
+    version('develop', branch='master')
+
+    depends_on('mpi')
+
+    variant('python', default=False, description='Build Python bindings')
+    extends('python', when='+python')
+    variant('mpi-wrappers', default=False, description='Build MPI wrappers (PMPI)')
+
+    conflicts('^openmpi', when='+mpi-wrappers')
+
+    def cmake_args(self):
+        args = []
+        if '+python' in self.spec:
+            args += ['-Dpython=on']
+        else:
+            args += ['-Dpython=off']
+
+        if '+mpi-wrappers' in self.spec:
+            args += ['-Dmpi-wrappers=on']
+        else:
+            args += ['-Dmpi-wrappers=off']
+
+        return args