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# Copyright 2013-2019 Lawrence Livermore National Security, LLC and other
# Spack Project Developers. See the top-level COPYRIGHT file for details.
#
# SPDX-License-Identifier: (Apache-2.0 OR MIT)
from spack import *
class RNnls(RPackage):
"""An R interface to the Lawson-Hanson implementation of an
algorithm for non-negative least squares (NNLS). Also allows
the combination of non-negative and non-positive constraints."""
homepage = "https://cloud.r-project.org/package=nnls"
url = "https://cloud.r-project.org/src/contrib/nnls_1.4.tar.gz"
list_url = "https://cloud.r-project.org/src/contrib/Archive/nnls"
version('1.4', sha256='0e5d77abae12bc50639d34354f96a8e079408c9d7138a360743b73bd7bce6c1f')
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