code: def _get_all_packages(mirror=DEFAULT_MIRROR,
                        cyg_arch='x86_64'):
      '''
      Return the list of packages based on the mirror provided.
      '''
      if 'cyg.all_packages' not in __context__:
          __context__['cyg.all_packages'] = {}
      if mirror not in __context__['cyg.all_packages']:
          __context__['cyg.all_packages'][mirror] = []
      if not __context__['cyg.all_packages'][mirror]:
          pkg_source = '/'.join([mirror, cyg_arch, 'setup.bz2'])
  
          file_data = _urlopen(pkg_source).read()
          file_lines = bz2.decompress(file_data).decode('utf_8',
                                                        errors='replace'
                                                       ).splitlines()
  
          packages = [re.search('^@ ([^ ]+)', line).group(1) for
                      line in file_lines if re.match('^@ [^ ]+', line)]
  
          __context__['cyg.all_packages'][mirror] = packages
  
      return __context__['cyg.all_packages'][mirrorf _get_all_packages(mirror=DEFAULT_MIRROR,
                        cyg_arch='x86_64'):
      '''
      Return the list of packages based on the mirror provided.
      '''
      if 'cyg.all_packages' not in __context__:
          __context__['cyg.all_packages'] = {}
      if mirror not in __context__['cyg.all_packages']:
          __context__['cyg.all_packages'][mirror] = []
      if not __context__['cyg.all_packages'][mirror]:
          pkg_source = '/'.join([mirror, cyg_arch, 'setup.bz2'])
  
          file_data = _urlopen(pkg_source).read()
          file_lines = bz2.decompress(file_data).decode('utf_8',
                                                        errors='replace'
                                                       ).splitlines()
  
          packages = [re.search('^@ ([^ ]+)', line).group(1) for
                      line in file_lines if re.match('^@ [^ ]+', line)]
  
          __context__['cyg.all_packages'][mirror] = packages
  
      return __context__['cyg.all_packages'][mirror]
docs: Return the list of packages based on the mirror provided.