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# Copyright 2013-2024 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", "wdconinc")
version("6.3.0")
depends_on("lhapdf", type="build")
depends_on("tar", type="build")
depends_on("curl", 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)
tar = which("tar")
curl = which("curl")
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
with working_dir(self.prefix.share.lhapdfsets):
for s in sets:
_filename = "%s.tar.gz" % s
curl(
"-L",
"-o",
_filename,
"http://lhapdfsets.web.cern.ch/lhapdfsets/current/%s" % _filename,
)
tar("xfz", _filename)
os.remove(_filename)
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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