diff --git a/var/spack/repos/builtin/packages/unuran/package.py b/var/spack/repos/builtin/packages/unuran/package.py
new file mode 100644
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+++ b/var/spack/repos/builtin/packages/unuran/package.py
@@ -0,0 +1,60 @@
+##############################################################################
+# Copyright (c) 2013-2018, Lawrence Livermore National Security, LLC.
+# Produced at the Lawrence Livermore National Laboratory.
+#
+# This file is part of Spack.
+# Created by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
+# LLNL-CODE-647188
+#
+# For details, see https://github.com/spack/spack
+# Please also see the NOTICE and LICENSE files for our notice and the LGPL.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License (as
+# published by the Free Software Foundation) version 2.1, February 1999.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
+# conditions of the GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+##############################################################################
+from spack import *
+
+
+class Unuran(AutotoolsPackage):
+    """Universal Non-Uniform Random number generator."""
+
+    homepage = "http://statmath.wu.ac.at/unuran"
+    url      = "http://statmath.wu.ac.at/unuran/unuran-1.8.1.tar.gz"
+
+    version('1.8.1', 'a5885baab53a2608c1d85517bf5d06a5')
+
+    variant('shared', default=True,
+        description="Enable the build of shared libraries")
+    variant('rngstreams', default=True,
+        description="Use RNGSTREAM library for uniform random generation")
+    variant('gsl',      default=False,
+        description="Use random number generators from GNU Scientific Library")
+
+    depends_on('gsl',        when="+gsl")
+    depends_on('rngstreams', when="+rngstreams")
+
+    def configure_args(self):
+
+        spec = self.spec
+
+        args = [
+            '--%s-shared' % ('enable' if '+shared' in spec else 'disable'),
+            '--with-urgn-default=%s' % (
+                'rngstream' if '+rngstreams' in spec else 'builtin'),
+            '--%s-urng-gsl' % (
+                'with' if '+gsl' in spec else 'without'),
+            '--%s-urng-rngstreams' % (
+                'with' if '+rngstreams' in spec else 'without')
+        ]
+
+        return args