Fail to use flake8 with pdm run

Hi, I am trying to test the usage of PDM for some projects, I made an example one. It works perfectly with pip and also with pipenv, everything was painless with PDM too until I try to run the flake8 linter.

If I run directly flake8 myfile.py it cannot find the flake8 command, that’s ok, I got the same error with pipenv, but with pipenv I was able to run it with pipenv run flake8 myfile.py, so I tried in the same way with PDM, using pdm run, but I got the error that cannot find flake8

root@ba68f6e2b3e6:/src# pdm run -v flake8 
Traceback (most recent call last):
  File "/usr/local/bin/pdm", line 8, in <module>
    sys.exit(main())
  File "/usr/local/lib/python3.9/site-packages/pdm/core.py", line 233, in main
    return Core().main(args)
  File "/usr/local/lib/python3.9/site-packages/pdm/core.py", line 168, in main
    raise cast(Exception, err).with_traceback(traceback)
  File "/usr/local/lib/python3.9/site-packages/pdm/core.py", line 163, in main
    f(options.project, options)
  File "/usr/local/lib/python3.9/site-packages/pdm/cli/commands/run.py", line 281, in handle
    sys.exit(runner.run(options.command, options.args))
  File "/usr/local/lib/python3.9/site-packages/pdm/cli/commands/run.py", line 219, in run
    return self._run_process(
  File "/usr/local/lib/python3.9/site-packages/pdm/cli/commands/run.py", line 154, in _run_process
    process = subprocess.Popen(expanded_args, cwd=cwd, env=process_env, shell=shell)
  File "/usr/local/lib/python3.9/subprocess.py", line 951, in __init__
    self._execute_child(args, executable, preexec_fn, close_fds,
  File "/usr/local/lib/python3.9/subprocess.py", line 1821, in _execute_child
    raise child_exception_type(errno_num, err_msg, err_filename)
FileNotFoundError: [Errno 2] No such file or directory: '/src/__pypackages__/3.9/bin/flake8'
root@ba68f6e2b3e6:/src# pdm run __pypackages__/3.9/bin/flake8 
[FileNotFoundError]: [Errno 2] No such file or directory: '__pypackages__/3.9/bin/flake8'

The file is correctly there placed, but pdm cannot find it.

What I am doing wrong?

[pawamoy]

If you’re working on Windows and copied __pypackages__ into the image, then yes, it would never have worked. Try to only copy the relevant files into your image, not the whole repository. There’s an example here: https://pdm.fming.dev/usage/advanced/#use-pdm-in-a-multi-stage-dockerfile

I believe this can be closed, thank you for reporting back @SirMartin 🙂

[SirMartin]

Hi, thanks for the answer.

I found the reason for my errors. The problem it seem because I made the pdm install locally and later ran the docker, because of that the __pypackages__ folder was copied to the container and failed when I run it.

Have this sense? I understand that has no meaning and it was my mistake.

Thanks