text: __all__ = 'VERSION', 'version_info'
  
  VERSION = '1.6.1'
  
  
  def version_info() -> str:
      import platform
      import sys
      from importlib import import_module
      from pathlib import Path
  
      from .main import compiled
  
      optional_deps = []
      for p in ('typing-extensions', 'email-validator', 'devtools'):
          try:
              import_module(p.replace('-', '_'))
          except ImportError:
              continue
          optional_deps.append(p)
  
      info = {
          'pydantic version': VERSION,
          'pydantic compiled': compiled,
          'install path': Path(__file__).resolve().parent,
          'python version': sys.version,
          'platform': platform.platform(),
          'optional deps. installed': optional_deps,
      }
      return '\n'.join('{:>30} {}'.format(k + ':', str(v).replace('\n', ' ')) for k, v in info.items())
  