_ctypes fail to import when using Conda in poetry 1.1.13

[grantmwilliams]

• [x ] I am on the latest Poetry version.
• [x ] I have searched the issues of this repo and believe that this is not a duplicate.
• [x ] If an exception occurs when executing a command, I executed it again in debug mode (-vvv option).

• OS version and name: Windows 10
• Poetry version: 1.1.13
• Conda version: 4.13.0
• Python version(conda): 3.10.4
• Link of a Gist with the contents of your pyproject.toml file:

Issue

This is the same issue as #4566 and #5059 and was supposed to be fixed in #5008 (I did make sure my local 1.1.13 installation had the same changes in it). I'm unsure if I missed a step, or if there is something more i should do to make sure my environments are correct? I have tried purging the cache and completely uninstalling and reinstalling poetry, but that did not seem to fix the issue for me.

Thanks - Grant

Some relevant stack traces:

Installing dependencies from lock file

Finding the necessary packages for the current system

Package operations: 10 installs, 0 updates, 0 removals

  • Installing pyparsing (3.0.9)

  Stack trace:

  7  ~\AppData\Roaming\pypoetry\venv\lib\site-packages\poetry\installation\executor.py:203 in _execute_operation
      201│
      202│             try:
    → 203│                 result = self._do_execute_operation(operation)
      204│             except EnvCommandError as e:
      205│                 if e.e.returncode == -2:

  6  ~\AppData\Roaming\pypoetry\venv\lib\site-packages\poetry\installation\executor.py:277 in _do_execute_operation
      275│             return 0
      276│
    → 277│         result = getattr(self, "_execute_{}".format(method))(operation)
      278│
      279│         if result != 0:

  5  ~\AppData\Roaming\pypoetry\venv\lib\site-packages\poetry\installation\executor.py:412 in _execute_install
      410│
      411│     def _execute_install(self, operation):  # type: (Install) -> None
    → 412│         return self._install(operation)
      413│
      414│     def _execute_update(self, operation):  # type: (Update) -> None

  4  ~\AppData\Roaming\pypoetry\venv\lib\site-packages\poetry\installation\executor.py:450 in _install
      448│             args.insert(2, "-U")
      449│
    → 450│         return self.run_pip(*args)
      451│
      452│     def _update(self, operation):

  3  ~\AppData\Roaming\pypoetry\venv\lib\site-packages\poetry\installation\executor.py:301 in run_pip
      299│     def run_pip(self, *args, **kwargs):  # type: (...) -> int
      300│         try:
    → 301│             self._env.run_pip(*args, **kwargs)
      302│         except EnvCommandError as e:
      303│             output = decode(e.e.output)

  2  ~\AppData\Roaming\pypoetry\venv\lib\site-packages\poetry\utils\env.py:1160 in run_pip
      1158│         pip = self.get_pip_command()
      1159│         cmd = pip + list(args)
    → 1160│         return self._run(cmd, **kwargs)
      1161│
      1162│     def run_python_script(self, content, **kwargs):  # type: (str, Any) -> str

  1  ~\AppData\Roaming\pypoetry\venv\lib\site-packages\poetry\utils\env.py:1453 in _run
      1452│         kwargs["env"] = self.get_temp_environ(environ=kwargs.get("env"))

...

   import ctypes
    File "C:\Users\Grant\miniconda3\lib\ctypes\__init__.py", line 8, in <module>
      from _ctypes import Union, Structure, Array
  ImportError: DLL load failed while importing _ctypes: The specified module could not be found.


  at ~\AppData\Roaming\pypoetry\venv\lib\site-packages\poetry\utils\env.py:1195 in _run
      1191│                 output = subprocess.check_output(
      1192│                     cmd, stderr=subprocess.STDOUT, **kwargs
      1193│                 )
      1194│         except CalledProcessError as e:
    → 1195│             raise EnvCommandError(e, input=input_)
      1196│
      1197│         return decode(output)
      1198│
      1199│     def execute(self, bin, *args, **kwargs):

[inboxedshoe]

I'm having the same issue here also with poetry 1.1.13 using pycharm.

[Phantomb]

Same here!

[atilla00]

Same here

[elbakramer]

It seems that virtualenv omits some required dlls while creating a poetry env in here:

https://github.com/python-poetry/poetry/blob/2def357119b2a9d48cc5c6608923c587532a5b09/src/poetry/utils/env.py#L1089-L1105

Copying ${CONDA_PREFIX}/Library/bin/*ffi*.dlls to poetry env's Script directory solved problem for me.

Use conda info and poetry env info for checking relevant paths.

[elbakramer]

Above actually only solved the ctypes problem when tested with poetry run python, but not others including TLS/SSL. I ended up with copying all the libraries under ${CONDA_PREFIX}/Library/bin/ out to ${CONDA_PREFIX}.

[finswimmer]

Hello everyone ,

you haven't come back to this issue for a long while. So I assume this is solved in the meantime and I can close this ticket.

Feel free to leave a comment if you disagree.

fin swimmer

[Phantomb]

Nope, still happens for me on Poetry 1.5.1:

C:\code\[..]>poetry update
Creating virtualenv [env_name] in C:\code\[..]\.venv
Updating dependencies
Resolving dependencies... (8.7s)

Package operations: 9 installs, 0 updates, 0 removals

  • Installing atomicwrites (1.4.1): Failed

  ChefBuildError

  Backend subprocess exited when trying to invoke build_wheel

  Traceback (most recent call last):
    File "C:\Users\[user]\AppData\Roaming\pypoetry\venv\lib\site-packages\pyproject_hooks\_in_process\_in_process.py", line 353, in <module>
      main()
    File "C:\Users\[user]\AppData\Roaming\pypoetry\venv\lib\site-packages\pyproject_hooks\_in_process\_in_process.py", line 335, in main
      json_out['return_val'] = hook(**hook_input['kwargs'])
    File "C:\Users\[user]\AppData\Roaming\pypoetry\venv\lib\site-packages\pyproject_hooks\_in_process\_in_process.py", line 251, in build_wheel
      return _build_backend().build_wheel(wheel_directory, config_settings,
    File "C:\Users\[user]~1\AppData\Local\Temp\tmpxwyiw_k_\.venv\lib\site-packages\setuptools\build_meta.py", line 416, in build_wheel
      return self._build_with_temp_dir(['bdist_wheel'], '.whl',
    File "C:\Users\[user]~1\AppData\Local\Temp\tmpxwyiw_k_\.venv\lib\site-packages\setuptools\build_meta.py", line 401, in _build_with_temp_dir
      self.run_setup()
    File "C:\Users\[user]~1\AppData\Local\Temp\tmpxwyiw_k_\.venv\lib\site-packages\setuptools\build_meta.py", line 487, in run_setup
      super(_BuildMetaLegacyBackend,
    File "C:\Users\[user]~1\AppData\Local\Temp\tmpxwyiw_k_\.venv\lib\site-packages\setuptools\build_meta.py", line 338, in run_setup
      exec(code, locals())
    File "<string>", line 16, in <module>
    File "C:\Users\[user]~1\AppData\Local\Temp\tmpxwyiw_k_\.venv\lib\site-packages\setuptools\__init__.py", line 107, in setup
      return distutils.core.setup(**attrs)
    File "C:\Users\[user]~1\AppData\Local\Temp\tmpxwyiw_k_\.venv\lib\site-packages\setuptools\_distutils\core.py", line 172, in setup
      ok = dist.parse_command_line()
    File "C:\Users\[user]~1\AppData\Local\Temp\tmpxwyiw_k_\.venv\lib\site-packages\setuptools\_distutils\dist.py", line 475, in parse_command_line
      args = self._parse_command_opts(parser, args)
    File "C:\Users\[user]~1\AppData\Local\Temp\tmpxwyiw_k_\.venv\lib\site-packages\setuptools\dist.py", line 1132, in _parse_command_opts
      nargs = _Distribution._parse_command_opts(self, parser, args)
    File "C:\Users\[user]~1\AppData\Local\Temp\tmpxwyiw_k_\.venv\lib\site-packages\setuptools\_distutils\dist.py", line 534, in _parse_command_opts
      cmd_class = self.get_command_class(command)
    File "C:\Users\[user]~1\AppData\Local\Temp\tmpxwyiw_k_\.venv\lib\site-packages\setuptools\dist.py", line 979, in get_command_class
      self.cmdclass[command] = cmdclass = ep.load()
    File "C:\Users\[user]\Miniconda3\envs\conda-poetry\lib\importlib\metadata\__init__.py", line 171, in load
      module = import_module(match.group('module'))
    File "C:\Users\[user]\Miniconda3\envs\conda-poetry\lib\importlib\__init__.py", line 126, in import_module
      return _bootstrap._gcd_import(name[level:], package, level)
    File "<frozen importlib._bootstrap>", line 1050, in _gcd_import
    File "<frozen importlib._bootstrap>", line 1027, in _find_and_load
    File "<frozen importlib._bootstrap>", line 1006, in _find_and_load_unlocked
    File "<frozen importlib._bootstrap>", line 688, in _load_unlocked
    File "<frozen importlib._bootstrap_external>", line 883, in exec_module
    File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed
    File "C:\Users\[user]~1\AppData\Local\Temp\tmpxwyiw_k_\.venv\lib\site-packages\wheel\bdist_wheel.py", line 28, in <module>
      from .macosx_libfile import calculate_macosx_platform_tag
    File "C:\Users\[user]~1\AppData\Local\Temp\tmpxwyiw_k_\.venv\lib\site-packages\wheel\macosx_libfile.py", line 43, in <module>
      import ctypes
    File "C:\Users\[user]\Miniconda3\envs\conda-poetry\lib\ctypes\__init__.py", line 8, in <module>
      from _ctypes import Union, Structure, Array
  ImportError: DLL load failed while importing _ctypes: The specified module could not be found.


  at ~\AppData\Roaming\pypoetry\venv\lib\site-packages\poetry\installation\chef.py:147 in _prepare
      143│
      144│                 error = ChefBuildError("\n\n".join(message_parts))
      145│
      146│             if error is not None:
    → 147│                 raise error from None
      148│
      149│             return path
      150│
      151│     def _prepare_sdist(self, archive: Path, destination: Path | None = None) -> Path:

Note: This error originates from the build backend, and is likely not a problem with poetry but with atomicwrites (1.4.1) not supporting PEP 517 builds. You can verify this by running 'pip wheel --use-pep517 "atomicwrites (==1.4.1)"'.

  • Installing attrs (23.1.0)
  • Installing colorama (0.4.6)
  • Installing more-itertools (9.1.0)
  • Installing packaging (23.1)
  • Installing pluggy (0.13.1)
  • Installing py (1.11.0)
  • Installing wcwidth (0.2.6)

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