Log and error spamming when language server binary is unavailable "Codeium server crashed" 127 (nixos)

[clorl]

These are two related bugs

1. Every few seconds I get a lua error that I fixed. It points to codeium/api.lua::255 trying to concat a null value "v".

		local function on_output(_, v, j)
			log.debug(j.pid .. ": " .. v)
		end

I fixed it with the following snippet which checks if v is nil

		local function on_output(_, v, j)
			log.debug(j.pid .. ": " .. (v and v or ""))
		end

2. I'm running NixOS and after authing successfully and fixing the aforementioned bug I spammed with this type of log

~/.local/share/nvim/lazy/codeium.nvim/lua/codeium/notify.lua:14: codeium server crashed:  {
  code = 127
}

Which indicates codeium tries to run a binary that isn't found.

Reproducing steps

1. Install nvim + codeium NixOs (or any system that will prevent running downloaded executables)
2. Start codeium
3. Enter insert mode
4. Chaos

Solutions :

1. Add config opts for number of restart attempts and debounce time. A plugin should never spam logs even on fail.
2. Don't use vim.notify to notify similar logs in a row. Print the first one and then defer it to the logs file
3. Add a more useful error message for error code 127
4. Add a portion in the readme for nixos users and to explain that you're downloading/using this binary in the background if it is something that is done
5. I also added this snippet as a quick workaround to the plugin's config

  -- enabled = function()
  --   return vim.fn.executable("codeium") == 1
  -- end,

Environment info

Plugin version

        branch main
        commit 2b10c17

Plugin config

{
  "Exafunction/codeium.nvim",
  cmd = "Codeium",
  event = "InsertEnter",
  build = ":Codeium Auth",
  dependencies = {
        "nvim-lua/plenary.nvim",
        -- I'm using blink.cmp in impersonation mode
  },
  opts = {
    enable_cmp_source = true,
    virtual_text = {
      enabled = true,
      key_bindings = {
        accept = "<C-enter>",
        next = "<M-]>",
        prev = "<M-[>",
      },
    },
  },
}

Lazy.nvim

- {lazy.nvim} version `11.17.1`
- OK {git} `version 2.47.0`

List of plugins
  Loaded (15)
    ● blink.cmp 21.03ms  nvim-lspconfig
    ● blink.compat 1.93ms  blink.cmp
    ● blink.compat 1.93ms  blink.cmp
    ● lazy.nvim 23.46ms  init.lua
    ● mason-lspconfig.nvim 0.3ms  mason.nvim
    ● mason-nvim-dap.nvim 0.31ms  mason.nvim
    ● mason-tool-installer.nvim 5.61ms  mason.nvim
    ● mason.nvim 53.88ms  start
    ● nvim-dap 0.68ms 󰢱 dap.ext.vscode  mason.nvim
    ● nvim-lspconfig 25.6ms  mason.nvim
    ● nvim-treesitter 13.93ms  start
    ● oil.nvim 8.79ms  start
    ● snacks.nvim 2.66ms  start
    ● vim-sleuth 0.7ms  start
    ● which-key.nvim 1.95ms  VeryLazy

  Not Loaded (24)
    ○ conform.nvim  BufWritePre  <leader>cf  ConformInfo 
    ○ lazydev.nvim  lua 

Neovim

NVIM v0.10.3
Build type: Release
LuaJIT 2.1.1713773202
Run "nvim -V1 -v" for more info

NixOs 25.05 with a flake-based system configuration

BUG_REPORT_URL="https://github.com/NixOS/nixpkgs/issues"
BUILD_ID="25.05.20250104.8f3e1f8"
CPE_NAME="cpe:/o:nixos:nixos:25.05"
DEFAULT_HOSTNAME=nixos
DOCUMENTATION_URL="https://nixos.org/learn.html"
HOME_URL="https://nixos.org/"
ID=nixos
ID_LIKE=""
IMAGE_ID=""
IMAGE_VERSION=""
LOGO="nix-snowflake"
NAME=NixOS
PRETTY_NAME="NixOS 25.05 (Warbler)"
SUPPORT_URL="https://nixos.org/community.html"
VARIANT=""
VARIANT_ID=""
VENDOR_NAME=NixOS
VENDOR_URL="https://nixos.org/"
VERSION="25.05 (Warbler)"
VERSION_CODENAME=warbler
VERSION_ID="25.05"```