text: ##############################################################################
  # Copyright (c) 2017-2018, The VOTCA Development Team (http://www.votca.org)
  #
  # 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/spack/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 VotcaXtp(CMakePackage):
      """Versatile Object-oriented Toolkit for Coarse-graining
         Applications (VOTCA) is a package intended to reduce the amount of
         routine work when doing systematic coarse-graining of various
         systems. The core is written in C++.
  
         This package contains the VOTCA exciton transport engine.
      """
      homepage = "http://www.votca.org"
      url      = "https://github.com/votca/xtp/tarball/v1.4"
  
      version('develop', git='https://github.com/votca/xtp', branch='master')
      version('1.4.1', '31a2dbd8bd48bf337bc88b20ab312050')
  
      depends_on("cmake@2.8:", type='build')
      depends_on("votca-tools@develop", when='@develop')
      depends_on("votca-tools@1.4:1.4.999", when='@1.4:1.4.999')
      depends_on("votca-csg@develop", when='@develop')
      depends_on("votca-csg@1.4:1.4.999", when='@1.4:1.4.999')
      depends_on("votca-ctp@develop", when='@develop')
      depends_on("libxc", when='@1.5:')
      depends_on("ceres-solver", when='@1.5:')
  