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diff --git a/var/spack/repos/builtin/packages/vecgeom/package.py b/var/spack/repos/builtin/packages/vecgeom/package.py
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+##############################################################################
+# Copyright (c) 2013-2016, 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/llnl/spack
+# Please also see the LICENSE file 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 *
+import platform
+
+
+class Vecgeom(CMakePackage):
+    """The vectorized geometry library for particle-detector simulation
+    (toolkits)."""
+
+    homepage = "https://gitlab.cern.ch/VecGeom/VecGeom"
+
+    version('0.3.rc', git='https://gitlab.cern.ch/VecGeom/VecGeom.git',
+            tag='v0.3.rc')
+
+    variant('debug', default=False, description='Build debug version')
+
+    depends_on('cmake@3.5:', type='build')
+
+    def build_type(self):
+        spec = self.spec
+        if '+debug' in spec:
+            return 'Debug'
+        else:
+            return 'Release'
+
+    def cmake_args(self):
+        options = [
+            '-DBACKEND=Scalar',
+            '-DGEANT4=OFF',
+            '-DUSOLIDS=ON',
+            '-DUSOLIDS_VECGEOM=ON'
+        ]
+
+        arch = platform.machine()
+        if arch == 'x86_64':
+            options.append('-DVECGEOM_VECTOR=sse4.2')
+        else:
+            options.append('-DVECGEOM_VECTOR=' + arch)
+        return options