Add lsp for .lua

home/editor/neovim/default.nix

@@ -51,6 +51,7 @@
     nodePackages.typescript-language-server
     nil
     yaml-language-server
+    lua-language-server
   ];
   home.sessionVariables.EDITOR = "nvim";
 }

home/editor/neovim/plugins.lua

@@ -3,6 +3,7 @@
 -- LSP stuff
 local lsp_zero = require('lsp-zero')
 
+
 lsp_zero.on_attach(function(client, bufnr)
 	lsp_zero.default_keymaps({ buffer = bufnr })
 end)
@@ -15,6 +16,7 @@ lsp_zero.format_on_save({
 	servers = {
 		['gopls'] = { 'go' },
 		['nil_ls'] = { 'nix' },
+		['lua_ls'] = { 'lua' },
 	},
 })
 
@@ -42,6 +44,46 @@ lspconfig.nil_ls.setup({
 	},
 })
 
+lspconfig.lua_ls.setup({
+	on_init = function(client)
+		local path = client.workspace_folders[1].name
+		if vim.loop.fs_stat(path .. '/.luarc.json') or vim.loop.fs_stat(path .. '/.luarc.jsonc') then
+			return
+		end
+
+		client.config.settings.Lua = vim.tbl_deep_extend('force', client.config.settings.Lua, {
+			runtime = {
+				-- Tell the language server which version of Lua you're using
+				-- (most likely LuaJIT in the case of Neovim)
+				version = 'LuaJIT'
+			},
+			-- Make the server aware of Neovim runtime files
+			workspace = {
+				checkThirdParty = false,
+				library = {
+					vim.env.VIMRUNTIME
+					-- Depending on the usage, you might want to add additional paths here.
+					-- "${3rd}/luv/library"
+					-- "${3rd}/busted/library",
+				}
+				-- or pull in all of 'runtimepath'. NOTE: this is a lot slower
+				-- library = vim.api.nvim_get_runtime_file("", true)
+			}
+		})
+	end,
+	settings = {
+		Lua = {
+			format = {
+				enable = true,
+				defaultConfig = {
+					indent_style = "space",
+					indent_size = "2",
+				}
+			}
+		}
+	}
+})
+
 
 -- Telescope
 require('telescope').setup({