old_contents: ##############################################################################
  # 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 PyPandas(PythonPackage):
      """pandas is a Python package providing fast, flexible, and expressive
         data structures designed to make working with relational or
         labeled data both easy and intuitive. It aims to be the
         fundamental high-level building block for doing practical, real
         world data analysis in Python. Additionally, it has the broader
         goal of becoming the most powerful and flexible open source data
         analysis / manipulation tool available in any language.
  
      """
      homepage = "http://pandas.pydata.org/"
      url      = "https://pypi.python.org/packages/source/p/pandas/pandas-0.16.0.tar.gz#md5=bfe311f05dc0c351f8955fbd1e296e73"
  
      version('0.16.0', 'bfe311f05dc0c351f8955fbd1e296e73')
      version('0.16.1', 'fac4f25748f9610a3e00e765474bdea8')
      version('0.18.0', 'f143762cd7a59815e348adf4308d2cf6')
  
      depends_on('py-dateutil', type=('build', 'run'))
      depends_on('py-numpy', type=('build', 'run'))
      depends_on('py-setuptools', type='build')
      depends_on('py-pytz', type=('build', 'run'))
      depends_on('py-numexpr', type=('build', 'run'))
      depends_on('py-bottleneck', type=('build', 'run'))
  
new_contents: ##############################################################################
  # 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 PyPandas(PythonPackage):
      """pandas is a Python package providing fast, flexible, and expressive
         data structures designed to make working with relational or
         labeled data both easy and intuitive. It aims to be the
         fundamental high-level building block for doing practical, real
         world data analysis in Python. Additionally, it has the broader
         goal of becoming the most powerful and flexible open source data
         analysis / manipulation tool available in any language.
  
      """
      homepage = "http://pandas.pydata.org/"
      url = "https://pypi.io/packages/source/p/pandas/pandas-0.19.0.tar.gz"
  
      version('0.19.0', 'bc9bb7188e510b5d44fbdd249698a2c3')
      version('0.18.0', 'f143762cd7a59815e348adf4308d2cf6')
      version('0.16.1', 'fac4f25748f9610a3e00e765474bdea8')
      version('0.16.0', 'bfe311f05dc0c351f8955fbd1e296e73')
  
      depends_on('py-dateutil', type=('build', 'run'))
      depends_on('py-numpy', type=('build', 'run'))
      depends_on('py-setuptools', type='build')
      depends_on('py-cython', type='build')
      depends_on('py-pytz', type=('build', 'run'))
      depends_on('py-numexpr', type=('build', 'run'))
      depends_on('py-bottleneck', type=('build', 'run'))
  
subject: add versions to package py-pandas (#3338)