I need some tips on getting python-lsp-server working with eglot:

File mode specification error: (void-variable company-backends) \[jsonrpc\] Server exited with status 1 Error in post-command-hook (#\[0 "\\303\\304\\301\\242\\305#\\210\\300\\306
!\\205r\\211q\\210 ?\\205\\307\\310\\311 \\")\\207" \[#<buffer [app.py](https://app.py)\> (#0) eglot--managed-mode remove-hook post-command-hook nil buffer-live-p apply eglot--connect eglot--guess-contact\] 4\]): (error "\[eglot\] -1: Server died") &#x200B; I'm pretty sure that I have all the required dependencies installed, but for some reason eglot breaks when I open a python file? Here's the python lsp that I'm using: [https://github.com/python-lsp/python-lsp-server](https://github.com/python-lsp/python-lsp-server) Any tips on how to fix this error?

We need to know what is your configuration first. I use Eglot with that server and "it just works" .

;;------------------------------------------------- (use-package eglot :defer t :hook (python-mode . eglot-ensure)) ;;------------------------------------------------- (use-package company :defer t :hook (python-mode . company-mode)) ;;-------------------------------------------------

I use to have that just works when using the older Python language server(palantir)(it's last commit is 2020 so it's not being maintained anymore), but I installed the Python LSP Server from the above link and it's not working out-of-the-box? Is there some extra steps that are required for eglot to find this Python Language Server?

Based on the config above and the error message with company backends... Try setting company to ":demand t" so it is loaded right away. If that works, you might need to play a bit with use-package to get things loaded in order.

Thanks and here are the error messages that I'm getting: \[stderr\] import pkg\_resources \[stderr\] ModuleNotFoundError: No module named 'pkg\_resources' File mode specification error: (void-variable company-backends)\[jsonrpc\] Server exited with status 1Error in post-command-hook (#\[0 "\\303\\304\\301\\242\\305#\\210\\300\\306
!\\205r\\211q\\210?\\205\\307\\310\\311 \\")\\207" \[#<buffer app.py> (#0) eglot--managed-mode remove-hook post-command-hook nil buffer-live-p apply eglot--connect eglot--guess-contact\] 4\]): (error "\[eglot\] -1: Server died")

I installed the Python package setuptools, but I'm not sure why I'm still getting the missing pkgs\_resources error? Maybe setuptools needs to be set to a different version? I'm guessing that I'm missing a dependency, but I'm not sure. This is getting frustrating.

Searching for program: No such file or directory, python-lsp-server. (add-to-list 'eglot-server-programs '(python-mode . ("python-lsp-server"))) \^ This helped me make it past the other error, but now Eglot can't seem to find the python-lsp-server, I'm not sure how to do this the nix way, because in nix the binary hash id changes. At least some progress.

I know this is very late but: 1. The name of the program (as seen by the command line) is "pylsp" and not "python-lsp-server", so you should use the former. 2. Ensure your "pylsp" is available to emacs (e.g. if installed in a virtualenv make sure emacs is using/running that venv). I like to install these kind of transversal programs every project is going to be using (such as pylsp, black and such) with pipx so I don't have to worry about venvs.

Thanks.