add lwgrp package

var/spack/packages/lwgrp/package.py

@@ -0,0 +1,17 @@
+import os
+from spack import *
+
+class Lwgrp(Package):
+    """Thie light-weight group library provides process group representations using O(log N) space and time."""
+
+    homepage = "https://github.com/hpc/lwgrp"
+    url      = "https://github.com/hpc/lwgrp/releases/download/v1.0.2/lwgrp-1.0.2.tar.gz"
+
+    versions = { '1.0.2' : 'ab7ba3bdd8534a651da5076f47f27d8a' }
+
+    depends_on('mpi')
+
+    def install(self, spec, prefix):
+        configure("--prefix=" + prefix)
+        make()
+        make("install")