# Copyright 2013-2022 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 __future__ import print_function
import argparse
import os
import llnl.util.tty as tty
import spack.build_environment as build_environment
import spack.cmd
import spack.cmd.common.arguments as arguments
import spack.paths
from spack.util.environment import dump_environment, pickle_environment
[docs]def setup_parser(subparser):
arguments.add_common_arguments(subparser, ['clean', 'dirty'])
arguments.add_concretizer_args(subparser)
subparser.add_argument(
'--dump', metavar="FILE",
help="dump a source-able environment to FILE"
)
subparser.add_argument(
'--pickle', metavar="FILE",
help="dump a pickled source-able environment to FILE"
)
subparser.add_argument(
'spec', nargs=argparse.REMAINDER,
metavar='spec [--] [cmd]...',
help="specs of package environment to emulate")
subparser.epilog\
= 'If a command is not specified, the environment will be printed ' \
'to standard output (cf /usr/bin/env) unless --dump and/or --pickle ' \
'are specified.\n\nIf a command is specified and spec is ' \
'multi-word, then the -- separator is obligatory.'
[docs]def emulate_env_utility(cmd_name, context, args):
if not args.spec:
tty.die("spack %s requires a spec." % cmd_name)
# 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:]
if not spec:
tty.die("spack %s requires a spec." % cmd_name)
specs = spack.cmd.parse_specs(spec, concretize=False)
if len(specs) > 1:
tty.die("spack %s only takes one spec." % cmd_name)
spec = specs[0]
spec = spack.cmd.matching_spec_from_env(spec)
build_environment.setup_package(spec.package, args.dirty, context)
if args.dump:
# Dump a source-able environment to a text file.
tty.msg("Dumping a source-able environment to {0}".format(args.dump))
dump_environment(args.dump)
if args.pickle:
# Dump a source-able environment to a pickle file.
tty.msg(
"Pickling a source-able environment to {0}".format(args.pickle))
pickle_environment(args.pickle)
if cmd:
# Execute the command with the new environment
os.execvp(cmd[0], cmd)
elif not bool(args.pickle or args.dump):
# If no command or dump/pickle option then act like the "env" command
# and print out env vars.
for key, val in os.environ.items():
print("%s=%s" % (key, val))