old_contents: """Subpackage containing all standard commands."""
  
  from packaging.errors import PackagingModuleError
  from packaging.util import resolve_name
  
  __all__ = ['get_command_names', 'set_command', 'get_command_class',
             'STANDARD_COMMANDS']
  
  _COMMANDS = {
      'check': 'packaging.command.check.check',
      'test': 'packaging.command.test.test',
      'build': 'packaging.command.build.build',
      'build_py': 'packaging.command.build_py.build_py',
      'build_ext': 'packaging.command.build_ext.build_ext',
      'build_clib': 'packaging.command.build_clib.build_clib',
      'build_scripts': 'packaging.command.build_scripts.build_scripts',
      'clean': 'packaging.command.clean.clean',
      'install_dist': 'packaging.command.install_dist.install_dist',
      'install_lib': 'packaging.command.install_lib.install_lib',
      'install_headers': 'packaging.command.install_headers.install_headers',
      'install_scripts': 'packaging.command.install_scripts.install_scripts',
      'install_data': 'packaging.command.install_data.install_data',
      'install_distinfo':
          'packaging.command.install_distinfo.install_distinfo',
      'sdist': 'packaging.command.sdist.sdist',
      'bdist': 'packaging.command.bdist.bdist',
      'bdist_dumb': 'packaging.command.bdist_dumb.bdist_dumb',
      'bdist_wininst': 'packaging.command.bdist_wininst.bdist_wininst',
      'register': 'packaging.command.register.register',
      'upload': 'packaging.command.upload.upload',
      'upload_docs': 'packaging.command.upload_docs.upload_docs'}
  
  # XXX use OrderedDict to preserve the grouping (build-related, install-related,
  # distribution-related)
  STANDARD_COMMANDS = set(_COMMANDS)
  
  
  def get_command_names():
      """Return registered commands"""
      return sorted(_COMMANDS)
  
  
  def set_command(location):
      cls = resolve_name(location)
      # XXX we want to do the duck-type checking here
      _COMMANDS[cls.get_command_name()] = cls
  
  
  def get_command_class(name):
      """Return the registered command"""
      try:
          cls = _COMMANDS[name]
      except KeyError:
          raise PackagingModuleError("Invalid command %s" % name)
      if isinstance(cls, str):
          cls = resolve_name(cls)
          _COMMANDS[name] = cls
      return cls
  
new_contents: """Subpackage containing all standard commands."""
  import os
  from packaging.errors import PackagingModuleError
  from packaging.util import resolve_name
  
  __all__ = ['get_command_names', 'set_command', 'get_command_class',
             'STANDARD_COMMANDS']
  
  _COMMANDS = {
      'check': 'packaging.command.check.check',
      'test': 'packaging.command.test.test',
      'build': 'packaging.command.build.build',
      'build_py': 'packaging.command.build_py.build_py',
      'build_ext': 'packaging.command.build_ext.build_ext',
      'build_clib': 'packaging.command.build_clib.build_clib',
      'build_scripts': 'packaging.command.build_scripts.build_scripts',
      'clean': 'packaging.command.clean.clean',
      'install_dist': 'packaging.command.install_dist.install_dist',
      'install_lib': 'packaging.command.install_lib.install_lib',
      'install_headers': 'packaging.command.install_headers.install_headers',
      'install_scripts': 'packaging.command.install_scripts.install_scripts',
      'install_data': 'packaging.command.install_data.install_data',
      'install_distinfo':
          'packaging.command.install_distinfo.install_distinfo',
      'sdist': 'packaging.command.sdist.sdist',
      'bdist': 'packaging.command.bdist.bdist',
      'bdist_dumb': 'packaging.command.bdist_dumb.bdist_dumb',
      'bdist_wininst': 'packaging.command.bdist_wininst.bdist_wininst',
      'register': 'packaging.command.register.register',
      'upload': 'packaging.command.upload.upload',
      'upload_docs': 'packaging.command.upload_docs.upload_docs',
  }
  
  # XXX this is crappy
  if os.name == 'nt':
      _COMMANDS['bdist_msi'] = 'packaging.command.bdist_msi'
  
  # XXX use OrderedDict to preserve the grouping (build-related, install-related,
  # distribution-related)
  STANDARD_COMMANDS = set(_COMMANDS)
  
  
  def get_command_names():
      """Return registered commands"""
      return sorted(_COMMANDS)
  
  
  def set_command(location):
      cls = resolve_name(location)
      # XXX we want to do the duck-type checking here
      _COMMANDS[cls.get_command_name()] = cls
  
  
  def get_command_class(name):
      """Return the registered command"""
      try:
          cls = _COMMANDS[name]
      except KeyError:
          raise PackagingModuleError("Invalid command %s" % name)
      if isinstance(cls, str):
          cls = resolve_name(cls)
          _COMMANDS[name] = cls
      return cls
  
subject: Fix packaging command registry to let Windows machines find bdist_msi