LSP Python Starting

[Michael Collier]

Testing LSP Pyton (debian) I get error message in console..

"NOTE: LSP: Python - Failed to create process, command: ['pylsp']; Error: [Errno 2] No such file or directory: 'pylsp'"

I installed (used pipx rather than pip, does it matter?)
pipx install python-lsp-server
pipx ensurepath
pylsp --help

also..
whereis pylsp
pylsp: /home/user1/.local/bin/pylsp

In cudatext Terminal PLus window I can invoke pylsp --help

I've reboted the machine, but still no luck, any ideas?

Thanks,
Mike

[main Alexey]

This is Linux this time, ok.
What does the command show in OS terminal:

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which pylsp

It finds 'pylsp'?

[main Alexey]

And: did you try to write the FULL path of pylsp to the settings/lsp_py.json ?

[Michael Collier]

which pylsp
It gives the path to
/home/user1/.local/bin/pylsp
I added the full path to lsp_py.json and now it works, thanks

[main Alexey]

Config lsp_py.json allows many options. one of them is 'env_paths' - list of paths. I hope you did not change it.

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 # language.py
        self._server_cmd = cfg.get(CMD_OS_KEY)
        self._tcp_port = cfg.get('tcp_port') # None => use Popen
        self._work_dir = cfg.get('work_dir')
        # paths to add to env  -- {var_name: list[paths]}
        self._env_paths = cfg.get('env_paths')
        self._log_stderr = bool(cfg.get('log_stderr'))
        self._format_on_save = bool(cfg.get('format_on_save'))
        self._disabled_contexts_for_server = cfg.get('disabled_contexts')

[Michael Collier]

The only thing I changed was lsp_py.json

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{
  "lexers": {
    "Python": "python"
  },
  "cmd_windows": ["pylsp.exe"],
  "cmd_macos": ["pylsp"],
  "cmd_unix": ["/home/user1/.local/bin/pylsp"]
}

The only other change was done by pipx during install (pipx ensurepath)
at end of .bashrc

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# Created by `pipx` on 2025-04-03 11:36:07
export PATH="$PATH:/home/user1/.local/bin"

[Michael Collier]

From cudatext console

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print(os.environ.get('PATH'))

gives

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/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games

From debian terminal window

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echo $PATH

gives

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/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games:/home/user1/.local/bin

...not sure if it is important, but debian terminal has the extra path that is needed.

[main Alexey]

so if you run Cud from the same terminal window (with full PATH) , it still sees 'old' PATH.
so environment is not inherited.
weird.

[Michael Collier]

If I open Cudatext from terminal command line then I do get the extra path I need..

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print(os.environ.get('PATH'))

gives

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/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games:/home/user1/.local/bin

In my earlier post I was starting cudatext via Desktop shortcut.

BTW, I had similar issues with freepascal and trying to open files using TProcess
https://forum.lazarus.freepascal.org/in ... 547.0.html

[main Alexey]

it means that clicking Desktop shortcut, does not inherit all PATH contents to child process. it's not Cud nor Freepascal issue, i guess.