Error when importing pylsp

[armfem]

I've searched open issues for similar requests

• Yes

I've manually reviewed logs to find potential errors

• Yes

I've recently downloaded the latest plugin version of mason.nvim

• Yes

Problem description

As soon as a python file is open with nvim, with pylsp active for python and I have the following error.

[ERROR][2025-03-26 16:10:10] .../vim/lsp/rpc.lua:770	"rpc"	"/home/home/.local/share/nvim/mason/bin/pylsp"	"stderr"	"2025-03-26 16:10:10,660 CET - ERROR - pylsp_jsonrpc.endpoint - Failed to handle request 1\nTraceback (most recent call last):\n  File \"/home/home/.local/share/nvim/mason/packages/python-lsp-server/venv/lib/python3.11/site-packages/pylsp_jsonrpc/endpoint.py\", line 117, in consume\n    self._handle_request(message['id'], message['method'], message.get('params'))\n  File \"/home/armando/.local/share/nvim/mason/packages/python-lsp-server/venv/lib/python3.11/site-packages/pylsp_jsonrpc/endpoint.py\", line 197, in _handle_request\n    handler_result = handler(params)\n                     ^^^^^^^^^^^^^^^\n  File \"/home/armando/.local/share/nvim/mason/packages/python-lsp-server/venv/lib/python3.11/site-packages/pylsp_jsonrpc/dispatchers.py\", line 25, in handler\n    return method(**(params or {}))\n           ^^^^^^^^^^^^^^^^^^^^^^^^\n  File \"/home/armando/.local/share/nvim/mason/packages/python-lsp-server/venv/lib/python3.11/site-packages/pylsp/python_lsp.py\", line 326, in m_initialize\n    self.config = config.Config(\n                  ^^^^^^^^^^^^^^\n  File \"/home/armando/.local/share/nvim/mason/packages/python-lsp-server/venv/lib/python3.11/site-packages/pylsp/config/config.py\", line 89, in __init__\n    self._pm.load_setuptools_entrypoints(PYLSP)\n  File \"/home/armando/.local/share/nvim/mason/packages/python-lsp-server/venv/lib/python3.11/site-packages/pluggy/_manager.py\", line 421, in load_setuptools_entrypoints\n    plugin = ep.load()\n             ^^^^^^^^^\n  File \"/usr/lib/python3.11/importlib/metadata/__init__.py\", line 202, in load\n    module = import_module(match.group('module'))\n             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n  File \"/usr/lib/python3.11/importlib/__init__.py\", line 126, in import_module\n    return _bootstrap._gcd_import(name[level:], package, level)\n           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n  File \"<frozen importlib._bootstrap>\", line 1206, in _gcd_import\n  File \"<frozen importlib._bootstrap>\", line 1178, in _find_and_load\n  File \"<frozen importlib._bootstrap>\", line 1142, in _find_and_load_unlocked\nModuleNotFoundError: No module named 'pylsp.plugins.rope_rename'\n"

Long story short, the file $HOME/.local/share/nvim/mason/packages/python-lsp-server/venv/lib/python3.11/site-packages/pylsp/plugins/rope_rename.py is missing.

Another example of the problem in stackoverflow

A quick fix, is to create it (and the error is gone).

touch $HOME/.local/share/nvim/mason/packages/python-lsp-server/venv/lib/python3.11/site-packages/pylsp/plugins/rope_rename.py

I do not really know lsp, mason or how any of this works hence I do not know if the issue is mason one, pylsp or other...

The only thing I did find out and may help to solve the issue is that the new repository python-lsp-server, does not have the rope_name.py file.

Nevertheless, there is an old palantir repository which do contains the file.

Mason registry and nvim-lspconfig both have the new referenced.

Expected behavior

Not to have the error mentioned above.

Steps to reproduce

Open a python file with neovim.

Affected packages

pylsp

Neovim version (>= 0.7)

Neovim 0.10.2
Mason up to date through LazyVim.

Operating system/version

Linux 6.1.0-32-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.129-1 (2025-03-06) x86_64 GNU/Linux

Healthcheck

==============================================================================
mason: require("mason.health").check()

mason.nvim ~
- OK mason.nvim version v1.11.0
- OK PATH: prepend
- OK Providers: 
    mason.providers.registry-api
    mason.providers.client
- OK neovim version >= 0.7.0

mason.nvim [Registries] ~
- OK Registry `github.com/mason-org/mason-registry version: 2025-03-26-frozen-elver` is installed.

mason.nvim [Core utils] ~
- OK unzip: `UnZip 6.00 of 20 April 2009, by Debian. Original by Info-ZIP.`
- OK wget: `GNU Wget 1.21.3 built on linux-gnu.`
- OK curl: `curl 7.88.1 (x86_64-pc-linux-gnu) libcurl/7.88.1 OpenSSL/3.0.15 zlib/1.2.13 brotli/1.0.9 zstd/1.5.4 libidn2/2.3.3 libpsl/0.21.2 (+libidn2/2.3.3) libssh2/1.10.0 nghttp2/1.52.0 librtmp/2.3 OpenLDAP/2.5.13`
- OK gzip: `gzip 1.12`
- OK tar: `tar (GNU tar) 1.34`
- OK bash: `GNU bash, version 5.2.15(1)-release (x86_64-pc-linux-gnu)`
- OK sh: `Ok`

mason.nvim [Languages] ~
- WARNING luarocks: not available
  - ADVICE:
    - spawn: luarocks failed with exit code - and signal -. luarocks is not executable
- OK Go: `go version go1.23.3 linux/amd64`
- OK Ruby: `ruby 3.1.2p20 (2022-04-12 revision 4491bb740a) [x86_64-linux-gnu]`
- OK cargo: `cargo 1.83.0 (5ffbef321 2024-10-29)`
- OK PHP: `PHP 8.2.28 (cli) (built: Mar 13 2025 18:21:38) (NTS)`
- OK node: `v18.19.0`
- OK RubyGem: `3.3.15`
- WARNING julia: not available
  - ADVICE:
    - spawn: julia failed with exit code - and signal -. julia is not executable
- OK python: `Python 3.11.2`
- OK Composer: `Composer version 2.5.5 2023-03-21 11:50:05`
- OK java: `openjdk version "17.0.14" 2025-01-21`
- OK javac: `javac 17.0.14`
- OK pip: `pip 23.0.1 from /usr/lib/python3/dist-packages/pip (python 3.11)`
- OK python venv: `Ok`
- OK npm: `9.2.0`

mason.nvim [GitHub] ~
- OK GitHub API rate limit. Used: 1. Remaining: 59. Limit: 60. Reset: Wed 26 Mar 2025 18:50:37 CET.
  Install and authenticate via gh-cli to increase rate limit.

Screenshots or recordings

No response

[LynxUtz]

Same on Debian 12 with NVIM v0.10.4 and Mason 1.11.0 and mason-lspconfig 1.32.0

Strangely, when I open a python shell in some terminal, I can do import pylsp.plugins.rope_rename, and this works fine. I've not created any rope_rename.py file before testing. I wasn't in the venv either. ($HOME/.local/share/nvim/mason/packages/python-lsp-server/venv)

I've just formatted the error message here:

Traceback (most recent call last):
	File "$HOME/.local/share/nvim/mason/packages/python-lsp-server/venv/lib/python3.11/site-packages/pylsp_jsonrpc/endpoint.py", line 117, in consume
		self._handle_request(message['id'], message['method'], message.get('params'))

	File "$HOME/.local/share/nvim/mason/packages/python-lsp-server/venv/lib/python3.11/site-packages/pylsp_jsonrpc/endpoint.py", line 197, in _handle_request
		handler_result = handler(params)
		                 ^^^^^^^^^^^^^^^
	File "$HOME/.local/share/nvim/mason/packages/python-lsp-server/venv/lib/python3.11/site-packages/pylsp_jsonrpc/dispatchers.py", line 25, in handler
		return method(**(params or {}))
		       ^^^^^^^^^^^^^^^^^^^^^^^^
	File "$HOME/.local/share/nvim/mason/packages/python-lsp-server/venv/lib/python3.11/site-packages/pylsp/python_lsp.py", line 326, in m_initialize
		self.config = config.Config(
                      ^^^^^^^^^^^^^^
	File "$HOME/.local/share/nvim/mason/packages/python-lsp-server/venv/lib/python3.11/site-packages/pylsp/config/config.py", line 89, in __init__
		self._pm.load_setuptools_entrypoints(PYLSP)

	File "$HOME/.local/share/nvim/mason/packages/python-lsp-server/venv/lib/python3.11/site-packages/pluggy/_manager.py", line 421, in load_setuptools_entrypoints
		plugin = ep.load()
		         ^^^^^^^^^
	File "$HOME/.local/share/nvim/mason/packages/python-lsp-server/venv/lib/python3.11/site-packages/importlib_metadata/__init__.py", line 189, in load
		module = import_module(match.group('module'))
		         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
	File "/usr/lib/python3.11/importlib/__init__.py", line 126, in import_module
		return _bootstrap._gcd_import(name[level:], package, level)
		       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
	File "<frozen importlib._bootstrap>", line 1206, in _gcd_import
	File "<frozen importlib._bootstrap>", line 1178, in _find_and_load
	File "<frozen importlib._bootstrap>", line 1142, in _find_and_load_unlocked
ModuleNotFoundError: No module named 'pylsp.plugins.rope_rename'

This python error message was inside the data block below:

Error executing vim.schedule lua callback:
...nvimL3OaY1/usr/share/nvim/runtime/lua/vim/lsp/client.lua:588: RPC[Error] code_name = InvalidParams, message = "ModuleNotFoundError: No module named 'pylsp.plugins.rope_rename'" data = { PYTHON ERROR }

stack traceback:
[C]: in function 'assert'
...nvimL3OaY1/usr/share/nvim/runtime/lua/vim/lsp/client.lua:588: in function ''
vim/_editor.lua: in function <vim/_editor.lua:0>