DoomEmacs Python Lsp not loading properly

[TirtharajPramanik]

I confirm that...

• I have searched the issue tracker, documentation, FAQ, Discourse, and Google, in case this issue has already been reported/resolved.
• I have read "How to Debug Issues", and will use it to provide as much information about this issue as possible.
• The issue can be reproduced on the latest available commit of Doom.
• The issue can be reproduced on a stable release of Emacs, such as 27, 28, or 29. (Unstable versions end in .50, .60, or .9x)

Expected behavior

I’ve enabled lsp-mode and the python +lsp language support.

Current behavior

However, when I open a Python file, I encounter the following warning:

Error (python-mode-local-vars-hook): Error running hook "lsp!" because: (void-function lsp-deferred)

Additionally, I see the message:

File local-variables error: (doom-hook-error python-mode-local-vars-hook lsp! (void-function lsp-deferred))

Steps to reproduce

1. enable lsp & (python +lsp).
2. open a file with .py extension.

System Information

I’m using Emacs 29 with native-comp on MacOS Sonoma.

[TirtharajPramanik]

I’m new to Emacs. Could you review this change and let me know if it might cause any issues? Should I create a pull request?

Solution:

Modify file: ~/.config/emacs/modules/lang/python/config.el line: 24

--- 24|    (add-hook 'python-mode-local-vars-hook #'lsp! 'append)
+++ 24|    (after! lsp!(add-hook 'python-mode-local-vars-hook #'lsp! 'append))

The (after! lsp!(...)) construct ensures that the hook is executed only after lsp-mode has been fully loaded.

Explanation:

In DoomEmacs, the lsp-deferred function, located in the file ~/.config/emacs/modules/tools/lsp/autoload/common.el at line 9 is used to lazily load lsp-mode.

By adding (after! lsp!(...)), we wait for lsp-mode to be available before executing the hook.
This prevents the “void-function lsp-deferred” error.

[hlissner]

Errors about missing lsp-* functions usually mean you've forgotten to enable the :tools lsp module (or you forgot to run doom sync afterwards?). You did not include your M-x doom/info in your system information, so I can't say for sure.

The (after! lsp!(...)) construct ensures that the hook is executed only after lsp-mode has been fully loaded.

This is incorrect. That ensures that the enclosed code never runs at all, because lsp! is not a valid package.

[TirtharajPramanik]

generated  Apr 05, 2024 22:21:46
system     MacOS 14.4.1 Darwin 23.4.0 arm64 ns
emacs      29.3 EMACSDIR=~/.config/emacs/
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doom       3.0.0-pre PROFILE=_@0 HEAD -> master, origin/master, origin/HEAD ea4792ccd
           2024-04-01 13:47:12 -0400 ~/.config/doom/
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