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##############################################################################
# Copyright (c) 2013, Lawrence Livermore National Security, LLC.
# Produced at the Lawrence Livermore National Laboratory.
#
# This file is part of Spack.
# Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
# LLNL-CODE-647188
#
# For details, see https://scalability-llnl.github.io/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 General Public License (as published by
# the Free Software Foundation) version 2.1 dated 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 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
##############################################################################
import os
from external import argparse
import llnl.util.tty as tty
import spack.cmd
import spack.build_environment as build_env
description = "Run a command with the environment for a particular spec's install."
def setup_parser(subparser):
subparser.add_argument(
'spec', nargs=argparse.REMAINDER, help="specs of package environment to emulate.")
def env(parser, args):
if not args.spec:
tty.die("spack env requires a spec.")
# Specs may have spaces in them, so if they do, require that the
# caller put a '--' between the spec and the command to be
# executed. If there is no '--', assume that the spec is the
# first argument.
sep = '--'
if sep in args.spec:
s = args.spec.index(sep)
spec = args.spec[:s]
cmd = args.spec[s+1:]
else:
spec = args.spec[0]
cmd = args.spec[1:]
specs = spack.cmd.parse_specs(spec, concretize=True)
if len(specs) > 1:
tty.die("spack env only takes one spec.")
spec = specs[0]
build_env.setup_package(spec.package)
if not cmd:
# If no command act like the "env" command and print out env vars.
for key, val in os.environ.items():
print "%s=%s" % (key, val)
else:
# Otherwise execute the command with the new environment
os.execvp(cmd[0], cmd)
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