add lua language server using overlays

programs/neovim/init.lua

@@ -33,6 +33,7 @@ _G.load_config = function()
 
   require('nvim-autopairs').setup()
   require("which-key").setup()
+  require('gitsigns').setup()
   require("salargalaxyline")
 
   -- Treesitter
@@ -208,6 +209,42 @@ _G.load_config = function()
     nvim_lsp[lsp].setup { on_attach = on_attach }
   end
 
+  
+-- lua language server
+local sumneko_binary = vim.fn.getenv("HOME").."/.nix-profile/bin/lua-language-server" 
+local runtime_path = vim.split(package.path, ';')
+table.insert(runtime_path, 'lua/?.lua')
+table.insert(runtime_path, 'lua/?/init.lua')
+
+require('lspconfig').sumneko_lua.setup {
+  cmd = { sumneko_binary },
+  on_attach = on_attach,
+  capabilities = capabilities,
+  settings = {
+    Lua = {
+      runtime = {
+        -- Tell the language server which version of Lua you're using (most likely LuaJIT in the case of Neovim)
+        version = 'LuaJIT',
+        -- Setup your lua path
+        path = runtime_path,
+      },
+      diagnostics = {
+        -- Get the language server to recognize the `vim` global
+        globals = { 'vim' },
+      },
+      workspace = {
+        -- Make the server aware of Neovim runtime files
+        library = vim.api.nvim_get_runtime_file('', true),
+      },
+      -- Do not send telemetry data containing a randomized but unique identifier
+      telemetry = {
+        enable = false,
+      },
+    },
+  },
+}
+
+
   -- metals
   vim.opt_global.shortmess:remove("F"):append("c")
   metals_config = require("metals").bare_config