docs: def main(arguments, toxinidir=None):
      "ctox: tox with conda."
      try:  # pragma: no cover
          # Exit on broken pipe.
          import signal
          signal.signal(signal.SIGPIPE, signal.SIG_DFL)
      except AttributeError:  # pragma: no cover
          # SIGPIPE is not available on Windows.
          pass
  
      try:
          import sys
          sys.exit(ctox(arguments, toxinidir))
  
      except CalledProcessError as c:
          print(c.output)
          return 1
  
      except NotImplementedError as e:
          gh = "https://github.com/hayd/ctox/issues"
          from colorama import Style
          cprint(Style.BRIGHT + str(e), 'err')
          cprint("If this is a valid tox.ini substitution, please open an issue on\n"
                 "github and request support: %s." % gh, 'warn')
          return 1
  
      except KeyboardInterrupt:  # pragma: no cover
          return 1