old_contents: ##############################################################################
  # 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
  ##############################################################################
  from external import argparse
  import spack
  import spack.cmd
  
  description = "Build a package for an existing source directory."
  
  def setup_parser(subparser):
      subparser.add_argument(
          '-i', '--ignore-dependencies', action='store_true', dest='ignore_deps',
          help="Do not try to install dependencies of requested packages.")
      subparser.add_argument(
          '--keep-prefix', action='store_true', dest='keep_prefix',
          help="Don't remove the install prefix if installation fails.")
      subparser.add_argument(
          'spec', nargs=argparse.REMAINDER,
          help="specs to use for install.  Must contain package AND verison.")
  
  
  def diy(self, args):
      if not args.spec:
          tty.die("spack diy requires a package spec argument.")
  
      specs = spack.cmd.parse_specs(args.specs, concretize=True)
      if len(specs) > 1:
          tty.die("spack diy only takes one spec.")
  
      spec = specs[0]
      package = spack.db.get(spec)
  
      package.do_install(
          keep_prefix=args.keep_prefix,
          ignore_deps=args.ignore_deps,
          keep_stage=True)   # don't remove stage dir for diy.
  
new_contents: ##############################################################################
  # 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 sys
  import os
  from external import argparse
  
  import llnl.util.tty as tty
  
  import spack
  import spack.cmd
  from spack.cmd.edit import edit_package
  from spack.stage import DIYStage
  
  description = "Do-It-Yourself: build from an existing source directory."
  
  def setup_parser(subparser):
      subparser.add_argument(
          '-i', '--ignore-dependencies', action='store_true', dest='ignore_deps',
          help="Do not try to install dependencies of requested packages.")
      subparser.add_argument(
          '--keep-prefix', action='store_true',
          help="Don't remove the install prefix if installation fails.")
      subparser.add_argument(
          '--skip-patch', action='store_true',
          help="Skip patching for the DIY build.")
      subparser.add_argument(
          'spec', nargs=argparse.REMAINDER,
          help="specs to use for install.  Must contain package AND verison.")
  
  
  def diy(self, args):
      if not args.spec:
          tty.die("spack diy requires a package spec argument.")
  
      specs = spack.cmd.parse_specs(args.spec)
      if len(specs) > 1:
          tty.die("spack diy only takes one spec.")
  
      spec = specs[0]
      if not spack.db.exists(spec.name):
          tty.warn("No such package: %s" % spec.name)
          create = tty.get_yes_or_no("Create this package?", default=False)
          if not create:
              tty.msg("Exiting without creating.")
              sys.exit(1)
          else:
              tty.msg("Running 'spack edit -f %s'" % spec.name)
              edit_package(spec.name, True)
              return
  
      if not spec.version.concrete:
          tty.die("spack diy spec must have a single, concrete version.")
  
      spec.concretize()
      package = spack.db.get(spec)
  
      if package.installed:
          tty.error("Already installed in %s" % package.prefix)
          tty.msg("Uninstall or try adding a version suffix for this DIY build.")
          sys.exit(1)
  
      # Forces the build to run out of the current directory.
      package.stage = DIYStage(os.getcwd())
  
      # TODO: make this an argument, not a global.
      spack.do_checksum = False
  
      package.do_install(
          keep_prefix=args.keep_prefix,
          ignore_deps=args.ignore_deps,
          keep_stage=True)   # don't remove source dir for DIY.
  
subject: Complete diy command.