C++ Library Instead of the C Library is Being Included

[ZennMystic]

Can someone please help me with a library issue. I have a screenshot: When I am typing in return EXIT_FAILURE; I get from: with nothing there. I mean the from is blank. So when I press enter it pulls in: #include cstdlib But this is wrong because it should be: #include <stdlib.h>... And not #include cstdlib...

I noticed it the the from: is blank and only pulls in the C++ header when it is text.

When I want to use a function it finds and pulls in the right header file just fine.

I am running on Debian 12 and installed Helix via the nix package meager. So I completely deleted and re-installed the nix package manager, as well as installing and setting up clang 19. But the issue remains. In fact I made things a bit worse, it seems, because...
Both C and C++ health WAS setup and green across the board. But now tree-sitter parser under C++ is: none.

But for C it is: Tree-sitter parser: ✓.

Before I re-installed everything the tree-sitter parser for both C and C++ was fine: Tree-sitter parser: ✓

But I still have the issues of it not always pulling in the correct header.

Here is my Helix log:

helix.log

[ZennMystic]

So I have managed to solve most of my issues by updating to clang tool chain 20. It is now pulling the correct .h header files.

However as I said previously after a complete overhaul and install C is now fine. But, my issue with C++ remains the same: Tree-sitter parser: None

hx --health c
Configured language servers:
✓ clangd: /usr/bin/clangd
Configured debug adapter: lldb-dap
Binary for debug adapter: 'lldb-dap' not found in $PATH
Configured formatter: clang-format
Binary for formatter: /usr/bin/clang-format
Tree-sitter parser: ✓
Highlight queries: ✓
Textobject queries: ✓
Indent queries: ✓

hx --health cpp
Configured language servers:
✓ clangd: /usr/bin/clangd
Configured debug adapter: lldb-dap
Binary for debug adapter: 'lldb-dap' not found in $PATH
Configured formatter: clang-format
Binary for formatter: /usr/bin/clang-format
Tree-sitter parser: None
Highlight queries: ✓
Textobject queries: ✓
Indent queries: ✓

[the-mikedavis]

Have you tried running hx -g fetch and hx -g build? That should build the C++ tree-sitter parser if it is missing

[ZennMystic]

I did try hx fetch and hx build Yes and it made no difference at all.

But I did not know about the -g flag. So I will try this now and get back to you....

Wow the -g flag made a difference. As it is now working! What does the -g flag do?
When I researched this I also saw references to hx fetch and hx build. I saw nothing in reference to any flags.
I had tried for a week to try and get C++ back to working again with no luck including a full clang/hx reinstall.

The only other thing to happen to my system (yesterday) was their was a Debian system update, which I did.

[ZennMystic]

Can I get help with why:

hx --health c is ok

But...:

hx --health cpp is not Please.

Do/Should I make another post? I am bot sure what to do...

[ZennMystic]

UPDATE:

1. I realized that the -g was short for --grammar. I used the full name not -g
2. I had ditched the nix package and installed the .deb package just to try and see if it would work. (It did/seems to now.)
3. I had originally installed way back when (version 23) via nix package manager because I could not get any other way to work.
4. Things only started being an issue in version 25. Nix package and Debian installed clangd worked fine till then.
5. I did not want to install anything rust, just to use a rust app because I will never use rust at all.

So it now seems clangd update and .deb install is what worked correctly. The nix install still does not (Tree-sitter parser: None).