Zed code completion not working

The first step should always be looking at the lsp logs, which you can open via the command palette in zed.

Not exactly sure what I’m looking for in Logs but this is what my logs look like. I wonder if this line is the problem

server "elixir-ls": failed to spawn command. path: "/Users/jamesavery/Library/Application 

2024-07-25T18:12:24.636696Z [INFO] starting language server "elixir-ls", path: "/Users/jamesavery/Dev/otp_apps/delta", id: 5
2024-07-25T18:12:24.753174Z [INFO] starting language server. binary path: "/Users/jamesavery/Library/Application Support/Zed/extensions/work/elixir/elixir-ls-v0.22.1/language_server.sh", working directory: "/Users/jamesavery/Dev/otp_apps/delta", args: []
2024-07-25T18:12:24.753329Z [ERROR] failed to start language server "elixir-ls": failed to spawn command. path: "/Users/jamesavery/Library/Application Support/Zed/extensions/work/elixir/elixir-ls-v0.22.1/language_server.sh", working directory: "/Users/jamesavery/Dev/otp_apps/delta", args: []
2024-07-25T18:12:24.753386Z [ERROR] server stderr: Some("")
2024-07-25T18:12:24.753434Z [ERROR] Hit 4 reinstallation attempts for "elixir-ls"
2024-07-25T19:40:44.760385Z [INFO] Initializing default prettier with plugins {}
2024-07-25T19:40:44.762037Z [INFO] starting language servers for Elixir: elixir-ls
2024-07-25T19:40:44.762262Z [INFO] starting language servers for Elixir: elixir-ls
2024-07-25T19:40:44.762322Z [INFO] starting language servers for Elixir: elixir-ls
2024-07-25T19:40:44.819125Z [INFO] Initializing default prettier with plugins {}
2024-07-25T19:40:44.819226Z [INFO] starting language servers for Elixir: elixir-ls
2024-07-25T19:40:44.820365Z [INFO] Initializing default prettier with plugins {}
2024-07-25T19:40:44.820426Z [INFO] starting language servers for Elixir: elixir-ls
2024-07-25T19:40:44.820646Z [INFO] Initializing default prettier with plugins {}
2024-07-25T19:40:44.820701Z [INFO] starting language servers for Elixir: elixir-ls
2024-07-25T19:40:44.820832Z [INFO] Initializing default prettier with plugins {}
2024-07-25T19:40:44.820881Z [INFO] starting language servers for Elixir: elixir-ls

I was getting this error too, but I did not know when it started on my mac (maybe a zed update?).

I tried to uninstall zed, compared releases of elixir-ls, etc, but I finally made it work by making the elixir-ls scripts that zed downloads to be executable. Comparing the version between VSCode and zed, I noticed that the elixir-ls release files were not marked as executable:

CleanShot 2024-08-05 at 8 .10.051200×226 38.7 KB

By running chmod +x ... things started to work again.

Nice, that solved it for me.

Also, I added the following overall config for Elixir, maybe it is useful for someone

Selects the language server and configures format on save.

Most of it was taken from the zed manual

{
  "languages": {
    "Elixir": {
      "show_inline_completions": true,
      "language_servers": ["elixir-ls"],
      "format_on_save": {
        "external": {
          "command": "mix",
          "arguments": ["format", "--stdin-filename", "{buffer_path}", "-"]
        }
      }
    }
  }
}

this worked on my problem

I ran into this as well. Fwiw, I had to add this to my settings.json

"lsp": {
    "elixir-ls": {},
    ...
}

Just ran across this, might be helpful for someone:
Zed has builtin tailwind support, which can be enabled as well.

Adjust to config as follows:

-     "language_servers": ["elixir-ls"],
+     "language_servers": ["elixir-ls", "tailwindcss-language-server"],

tailwind auto completion in a ~H Heex block for liveview using zed928×374 49.6 KB

I have just installed Zed with the elixir official extension. It should work by default right in the .heex files ?

Code completion works for me in .ex file but doesn’t in .heex

image878×477 38.3 KB

If I create a regular .html file in zed, then the HTML autocomplete works as expected.

To be honest I’m not sure what you expect here. There is no Elixir code in the screenshot where the code completion could happen. Could you elaborate?

Providing more details:

In heex files I dont get autocomplete of HTML tags. For ex. if I type ```<div>``` then the div autoclosing tags should be autogenerated like in .html files in zed.

image721×706 49.1 KB

In .html files its working as expected.

image1056×405 34.8 KB

Zed claims HEEX support in its elixir support is on by default. Elixir | Elixir