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# Copyright 2013-2021 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)
import os
from spack.package import *
class Lhapdfsets(BundlePackage):
"""A set of disretised data files of parton density functions ,
to be used with the LHAPDF library"""
homepage = "https://lhapdf.hepforge.org/pdfsets.html"
tags = ['hep']
maintainers = ['vvolkl']
version('6.3.0')
depends_on('lhapdf', type='build')
phases = ['install']
# use a dummy executables for spack external support
executables = [r'^lhapdf$']
variant('sets', description="Individiual lhapdf sets to install", values=('all', 'default'), default='default')
def install(self, spec, prefix):
mkdirp(self.prefix.share.lhapdfsets)
lhapdf = which('lhapdf')
sets = self.spec.variants['sets'].value
if sets == 'all':
# parse set names from index file
all_sets = [_line.split()[1] for _line in
open(join_path(os.path.dirname(__file__),
'pdfsets.index')).readlines()]
sets = all_sets
elif sets == 'default':
default_sets = ["MMHT2014lo68cl", "MMHT2014nlo68cl", "CT14lo", "CT14nlo"]
sets = default_sets
lhapdf("--pdfdir=" + self.prefix.share.lhapdfsets,
"install", *sets)
def setup_dependent_build_environment(self, env, dependent_spec):
env.set('LHAPDF_DATA_PATH', self.prefix.share.lhapdfsets)
def setup_run_environment(self, env):
env.set('LHAPDF_DATA_PATH', self.prefix.share.lhapdfsets)
@classmethod
def determine_spec_details(cls, prefix, exes_in_prefix):
path = os.environ.get('LHAPDF_DATA_PATH', None)
# unfortunately the sets are not versioned -
# just hardcode the current version and hope it is fine
s = Spec.from_detection('lhapdfsets@6.3.0')
s.external_path = path
return s if path else None
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