old_contents: #!/usr/bin/env python
  
  # Copyright 2018 The Crashpad Authors. All rights reserved.
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #     http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  # Various code adapted from:
  # https://cs.chromium.org/chromium/src/build/linux/sysroot_scripts/install-sysroot.py
  
  import os
  import shutil
  import subprocess
  import sys
  import urllib2
  
  SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__))
  
  # Sysroot revision from:
  # https://cs.chromium.org/chromium/src/build/linux/sysroot_scripts/sysroots.json
  SERVER = 'https://commondatastorage.googleapis.com'
  PATH = 'chrome-linux-sysroot/toolchain'
  REVISION = '43a87bbebccad99325fdcf34166295b121ee15c7'
  FILENAME = 'debian_sid_amd64_sysroot.tar.xz'
  
  
  def main():
      url = '%s/%s/%s/%s' % (SERVER, PATH, REVISION, FILENAME)
  
      sysroot = os.path.join(SCRIPT_DIR, os.pardir, 'third_party', 'linux',
                             'sysroot')
  
      stamp = os.path.join(sysroot, '.stamp')
      if os.path.exists(stamp):
          with open(stamp) as s:
              if s.read() == url:
                  return
  
      print 'Installing Debian root image from %s' % url
  
      if os.path.isdir(sysroot):
          shutil.rmtree(sysroot)
      os.mkdir(sysroot)
      tarball = os.path.join(sysroot, FILENAME)
      print 'Downloading %s' % url
  
      for _ in range(3):
          response = urllib2.urlopen(url)
          with open(tarball, 'wb') as f:
              f.write(response.read())
          break
      else:
          raise Exception('Failed to download %s' % url)
  
      subprocess.check_call(['tar', 'xf', tarball, '-C', sysroot])
  
      os.remove(tarball)
  
      with open(stamp, 'w') as s:
          s.write(url)
  
  
  if __name__ == '__main__':
      main()
      sys.exit(0)
  
new_contents: #!/usr/bin/env python3
  
  # Copyright 2018 The Crashpad Authors. All rights reserved.
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #     http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  # Various code adapted from:
  # https://cs.chromium.org/chromium/src/build/linux/sysroot_scripts/install-sysroot.py
  
  import os
  import shutil
  import subprocess
  import sys
  import urllib.request
  
  SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__))
  
  # Sysroot revision from:
  # https://cs.chromium.org/chromium/src/build/linux/sysroot_scripts/sysroots.json
  SERVER = 'https://commondatastorage.googleapis.com'
  PATH = 'chrome-linux-sysroot/toolchain'
  REVISION = '43a87bbebccad99325fdcf34166295b121ee15c7'
  FILENAME = 'debian_sid_amd64_sysroot.tar.xz'
  
  
  def main():
      url = '%s/%s/%s/%s' % (SERVER, PATH, REVISION, FILENAME)
  
      sysroot = os.path.join(SCRIPT_DIR, os.pardir, 'third_party', 'linux',
                             'sysroot')
  
      stamp = os.path.join(sysroot, '.stamp')
      if os.path.exists(stamp):
          with open(stamp) as s:
              if s.read() == url:
                  return
  
      print('Installing Debian root image from %s' % url)
  
      if os.path.isdir(sysroot):
          shutil.rmtree(sysroot)
      os.mkdir(sysroot)
      tarball = os.path.join(sysroot, FILENAME)
      print('Downloading %s' % url)
  
      for _ in range(3):
          response = urllib.request.urlopen(url)
          with open(tarball, 'wb') as f:
              f.write(response.read())
          break
      else:
          raise Exception('Failed to download %s' % url)
  
      subprocess.check_call(['tar', 'xf', tarball, '-C', sysroot])
  
      os.remove(tarball)
  
      with open(stamp, 'w') as s:
          s.write(url)
  
  
  if __name__ == '__main__':
      main()
      sys.exit(0)
  
subject: Update install_linux_sysroot for py3