##############################################################################
# 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 argparse

import llnl.util.tty as tty

import spack
import spack.cmd

description = "Show dependent packages."

def setup_parser(subparser):
    subparser.add_argument(
        'spec', nargs=argparse.REMAINDER, help="specs to list dependencies of.")


def dependents(parser, args):
    specs = spack.cmd.parse_specs(args.spec, concretize=True)
    if len(specs) != 1:
        tty.die("spack dependents takes only one spec.")

    fmt = '$_$@$%@$+$=$#'
    deps = [d.format(fmt) for d in specs[0].package.installed_dependents]
    tty.msg("Dependents of %s" % specs[0].format(fmt), *deps)

Fix for dependent package detection.