new package: r-devtools

This PR brings in the R devtools package and it dependencies.

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

@@ -0,0 +1,49 @@
+##############################################################################
+# 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 *
+
+
+class RJsonlite(Package):
+    """A fast JSON parser and generator optimized for statistical data and the
+    web. Started out as a fork of 'RJSONIO', but has been completely rewritten
+    in recent versions. The package offers flexible, robust, high performance
+    tools for working with JSON in R and is particularly powerful for building
+    pipelines and interacting with a web API. The implementation is based on
+    the mapping described in the vignette (Ooms, 2014). In addition to
+    converting JSON data from/to R objects, 'jsonlite' contains functions to
+    stream, validate, and prettify JSON data. The unit tests included with the
+    package verify that all edge cases are encoded and decoded consistently for
+    use with dynamic data in systems and applications."""
+
+    homepage = "https://github.com/jeroenooms/jsonlite"
+    url = "https://cran.r-project.org/src/contrib/jsonlite_0.9.21.tar.gz"
+
+    version('0.9.21', '4fc382747f88a79ff0718a0d06bed45d')
+
+    extends('R')
+
+    def install(self, spec, prefix):
+        R('CMD', 'INSTALL',
+          '--library={0}'.format(self.module.r_lib_dir), self.stage.source_path)