Preliminary RPackage class (#2761)

lib/spack/spack/__init__.py

@@ -159,7 +159,9 @@
 from spack.build_systems.makefile import MakefilePackage
 from spack.build_systems.autotools import AutotoolsPackage
 from spack.build_systems.cmake import CMakePackage
-__all__ += ['Package', 'CMakePackage', 'AutotoolsPackage', 'MakefilePackage']
+from spack.build_systems.r import RPackage
+__all__ += ['Package', 'CMakePackage', 'AutotoolsPackage', 'MakefilePackage',
+            'RPackage']
 
 from spack.version import Version, ver
 __all__ += ['Version', 'ver']

lib/spack/spack/build_systems/r.py

@@ -0,0 +1,57 @@
+##############################################################################
+# 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
+##############################################################################
+
+import inspect
+
+from spack.directives import extends
+from spack.package import PackageBase
+
+
+class RPackage(PackageBase):
+    """Specialized class for packages that are built using R
+
+    This class provides a single phase that can be overridden:
+    * install
+
+    It has sensible defaults and for many packages the only thing
+    necessary will be to add dependencies
+    """
+    phases = ['install']
+
+    # To be used in UI queries that require to know which
+    # build-system class we are using
+    build_system_class = 'RPackage'
+
+    extends('r')
+
+    def install(self, spec, prefix):
+        """Install the R package"""
+        inspect.getmodule(self).R(
+            'CMD', 'INSTALL',
+            '--library={0}'.format(self.module.r_lib_dir),
+            self.stage.source_path)
+
+    # Check that self.prefix is there after installation
+    PackageBase.sanity_check('install')(PackageBase.sanity_check_prefix)

lib/spack/spack/cmd/create.py

@@ -215,16 +215,11 @@ def __init__(self, name, *args):
 class RGuess(DefaultGuess):
     """Provides appropriate overrides for R extensions"""
     dependencies = """\
-    extends('r')
-
-    # FIXME: Add additional dependencies if required.
+    # FIXME: Add dependencies if required.
     # depends_on('r-foo', type=nolink)"""
 
     body = """\
-    def install(self, spec, prefix):
-        # FIXME: Add logic to build and install here.
-        R('CMD', 'INSTALL', '--library={0}'.format(self.module.r_lib_dir),
-          self.stage.source_path)"""
+    # FIXME: Override install() if necessary."""
 
     def __init__(self, name, *args):
         name = 'r-{0}'.format(name)