Neovim LSP Autocomplete

[joshmedeski]

I'm using Neovim to write my hammerspoon configuration.

I'd love to setup auto-complete, code completion, and documentation for the lua language server.

What would be the first steps to getting this done? Has anyone else made any attempts to work on this?

[megalithic]

Hey there @joshmedeski; the best bet is to first, install the EmmyLua spoon. Then, you can include that path in the ones lua_ls uses; I've done something like that here: https://github.com/megalithic/dotfiles/blob/main/config/nvim/lua/mega/servers.lua#L404

[joshmedeski]

Thanks, once I installed and loaded the EmmyLua Spoon, I created this .neoconf.json in my hammerspoon config directory.

{
  "neodev": {
    "library": {
      "enabled": true,
      "plugins": ["nvim-lspconfig"]
    }
  },
  "lspconfig": {
    "lua_ls": {
      "Lua.workspace.library": [
        "/Users/{username}/.hammerspoon/Spoons/EmmyLua.spoon/annotations"
      ]
    }
  }
}

And it works!

[megalithic]

brilliant!

[Demianeen]

Just for everybody else as stupid as me. You need to load Spoon first!

[tsxoxo]

Thank You for this thread! This still works in 2025. I always feel a little pity for my LSP when it does not know what is going on.

Step-by-step instructions for noobs like me

Assumes you have hammerspoon installed.

• Download the EmmyLua spoon
• Load it:

-- {your hammerspoon path}/init.lua
hs.loadSpoon("EmmyLua")

• Reload config. EmmyLua will generate the annotations your LSP needs (I think)
• Point your LSP to the annotations:

Setup for NeoVim 0.11 with native LSP

-- nvim/lsp/lua_ls.lua

return {
	on_init = function(client)
		client.config.settings.Lua = vim.tbl_deep_extend("force", client.config.settings.Lua, {
			workspace = {
				library = {
					vim.fn.expand("~/.hammerspoon/Spoons/EmmyLua.spoon/annotations"),
				},
			},
		})
	end,
}

---

That's how I got it to work, anyway.

Any optimizations welcome!

Cheers!
tsxoxo

PS. As long as I don't install new Spoons, I don't need to load EmmyLua each time, right?