r-gbm: new package. (#5548)

* pr-quantities: add version & py-numpy conflict (#5307)

* r-gbm: Create new package.

var/spack/repos/builtin/packages/r-gbm/package.py

@@ -0,0 +1,37 @@
+##############################################################################
+# Copyright (c) 2013-2017, 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 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 RGbm(RPackage):
+    """Generalized Boosted Regression Models."""
+
+    homepage = "https://cran.rstudio.com/web/packages/gbm/index.html"
+    url      = "https://cran.rstudio.com/src/contrib/gbm_2.1.3.tar.gz"
+
+    version('2.1.3', '9b2f32c892c6e31b01c1162e3b16b3f4')
+
+    depends_on('r-survival', type=('build', 'run'))
+    depends_on('r-lattice', type=('build', 'run'))