Interactive question fails in subcommand (poetry cache clear)

[AndBondStyle]

I'm facing an issue with poetry, but I believe it isn't poetry's fault. Environment is: python 3.8.10, poetry 1.2.0a2 and cleo 1.0.0a4.

Command poetry cache clear pypi --all -vvv crashes and gives following traceback:

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(temp) abs@abs-pc:~$ poetry cache clear pypi --all -vvv
Delete 318 entries? (yes/no) [no]
  Stack trace:

  13  venv/temp/lib/python3.8/site-packages/cleo/application.py:330 in run
       328│
       329│             try:
     → 330│                 exit_code = self._run(io)
       331│             except Exception as e:
       332│                 if not self._catch_exceptions:

  12  venv/temp/lib/python3.8/site-packages/poetry/console/application.py:180 in _run
       178│         self._load_plugins(io)
       179│
     → 180│         return super()._run(io)
       181│
       182│     def _configure_io(self, io: IO) -> None:

  11  venv/temp/lib/python3.8/site-packages/cleo/application.py:425 in _run
       423│                 io.set_input(ArgvInput(argv))
       424│
     → 425│         exit_code = self._run_command(command, io)
       426│         self._running_command = None
       427│

  10  venv/temp/lib/python3.8/site-packages/cleo/application.py:467 in _run_command
       465│
       466│         if error is not None:
     → 467│             raise error
       468│
       469│         return event.exit_code

   9  venv/temp/lib/python3.8/site-packages/cleo/application.py:451 in _run_command
       449│
       450│             if event.command_should_run():
     → 451│                 exit_code = command.run(io)
       452│             else:
       453│                 exit_code = ConsoleCommandEvent.RETURN_CODE_DISABLED

   8  venv/temp/lib/python3.8/site-packages/cleo/commands/base_command.py:118 in run
       116│         io.input.validate()
       117│
     → 118│         status_code = self.execute(io)
       119│
       120│         if status_code is None:

   7  venv/temp/lib/python3.8/site-packages/cleo/commands/command.py:85 in execute
        83│
        84│         try:
     →  85│             return self.handle()
        86│         except KeyboardInterrupt:
        87│             return 1

   6  venv/temp/lib/python3.8/site-packages/poetry/console/commands/cache/clear.py:58 in handle
        56│                 entries_count += len(files)
        57│
     →  58│             delete = self.confirm(
        59│                 "Delete {} entries?".format(entries_count)
        60│             )

   5  venv/temp/lib/python3.8/site-packages/cleo/commands/command.py:143 in confirm
       141│         )
       142│
     → 143│         return question.ask(self._io)
       144│
       145│     def ask(

   4  venv/temp/lib/python3.8/site-packages/cleo/ui/question.py:75 in ask
        73│
        74│         if not self._validator:
     →  75│             return self._do_ask(io)
        76│
        77│         def interviewer():

   3  venv/temp/lib/python3.8/site-packages/cleo/ui/question.py:101 in _do_ask
        99│
       100│             if not ret:
     → 101│                 ret = self._read_from_input(io)
       102│         else:
       103│             ret = self._autocomplete(io)

   2  venv/temp/lib/python3.8/site-packages/cleo/ui/question.py:260 in _read_from_input
       258│         Read user input.
       259│         """
     → 260│         ret = io.read_line(4096)
       261│
       262│         if not ret:

   1  venv/temp/lib/python3.8/site-packages/cleo/io/io.py:42 in read_line
        40│         Reads a line from the input stream.
        41│         """
     →  42│         return self._input.read_line(length=length, default=default)
        43│
        44│     def write_line(

  AttributeError

  'NoneType' object has no attribute 'readline'

  at venv/temp/lib/python3.8/site-packages/cleo/io/inputs/input.py:77 in read_line
       73│         """
       74│         if not self._interactive:
       75│             return default
       76│
    →  77│         return self._stream.readline(length)
       78│
       79│     def close(self) -> None:
       80│         """
       81│         Closes the input.

My guess is that the problem is in cleo/application.py line 423: it sets a new input handler (instance of ArgvInput), which has no associated stream (thus the NoneType attribute error). The following patch is worked for me:

<<< application.py line 419 >>>
                if index is not None:
                    del argv[index + 1 : index + 1 + (len(name.split(" ")) - 1)]

-                io.set_input(ArgvInput(argv))
+                new_input = ArgvInput(argv)
+                new_input.set_stream(io.input.stream)
+                io.set_input(new_input)

        exit_code = self._run_command(command, io)
        self._running_command = None
<<< application.py line 427 >>>

[caniko]

I also have this error.

[Secrus]

This issue is resolved in the current main branch. Closing.