Does not install

Poetry installed with brew install poetry. This is why core functionality should not be in a plugin.

$ poetry self add poetry-plugin-export
Using version ^1.9.0 for poetry-plugin-export

Updating dependencies
Resolving dependencies... (3.6s)

Package operations: 1 install, 2 updates, 0 removals

  - Updating msgpack (1.1.0 -> 1.1.1): Failed

  CalledProcessError

  Command '['/usr/local/Cellar/poetry/2.1.3_1/libexec/bin/python', '/usr/local/Cellar/poetry/2.1.3_1/libexec/lib/python3.13/site-packages/virtualenv/seed/wheels/embed/pip-25.1.1-py3-none-any.whl/pip', 'uninstall', 'msgpack', '-y']' returned non-zero exit status 1.

  at /usr/local/Cellar/python@3.13/3.13.5/Frameworks/Python.framework/Versions/3.13/lib/python3.13/subprocess.py:577 in run
       573│             # We don't call process.wait() as .__exit__ does that for us.
       574│             raise
       575│         retcode = process.poll()
       576│         if check and retcode:
    →  577│             raise CalledProcessError(retcode, process.args,
       578│                                      output=stdout, stderr=stderr)
       579│     return CompletedProcess(process.args, retcode, stdout, stderr)
       580│ 
       581│ 

The following error occurred when trying to handle this error:


  EnvCommandError

  Command ['/usr/local/Cellar/poetry/2.1.3_1/libexec/bin/python', '/usr/local/Cellar/poetry/2.1.3_1/libexec/lib/python3.13/site-packages/virtualenv/seed/wheels/embed/pip-25.1.1-py3-none-any.whl/pip', 'uninstall', 'msgpack', '-y'] errored with the following return code 1
  
  Output:
  Found existing installation: msgpack 1.1.0
  error: uninstall-no-record-file
  
  × Cannot uninstall msgpack 1.1.0
  ╰─> The package's contents are unknown: no RECORD file was found for msgpack.
  
  hint: The package was installed by brew. You should check if it can uninstall the package.
  

  at /usr/local/Cellar/poetry/2.1.3_1/libexec/lib/python3.13/site-packages/poetry/utils/env/base_env.py:434 in _run
      430│                 output = subprocess.check_output(
      431│                     cmd, stderr=stderr, env=env, text=True, encoding=encoding, **kwargs
      432│                 )
      433│         except CalledProcessError as e:
    → 434│             raise EnvCommandError(e)
      435│ 
      436│         return output
      437│ 
      438│     def execute(self, bin: str, *args: str, **kwargs: Any) -> int:

Cannot install msgpack.

Start by reproducing the reported entry point: install Poetry with Homebrew, then run poetry self add poetry-plugin-export and inspect the msgpack uninstall failure. Determine the expected installation path for this environment; done means the plugin installs successfully without the reported uninstall-no-record-file error.