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##############################################################################
# Copyright (c) 2013-2018, 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/spack/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 RPowerlaw(RPackage):
    """An implementation of maximum likelihood estimators for a variety of
       heavy tailed distributions, including both the discrete and continuous
       power law distributions. Additionally, a goodness-of-fit based approach
       is used to estimate the lower cut-off for the scaling region."""

    homepage = "https://github.com/csgillespie/poweRlaw"
    url      = "https://cran.rstudio.com/src/contrib/poweRlaw_0.70.1.tar.gz"
    list_url = "https://cran.rstudio.com/src/contrib/Archive/poweRlaw"

    version('0.70.1', '4117cb95c37f72441f320ea12f553065')

    depends_on('r-vgam', type=('build', 'run'))