after/ftplugin/rust.lua

@@ -1,9 +0,0 @@
-vim.api.nvim_create_autocmd("LspAttach", {
-  buffer = 0,
-  callback = function()
-    vim.defer_fn(function()
-      vim.api.nvim_set_hl(0, "@lsp.type.namespace.rust", { link = "Include" })
-      vim.api.nvim_set_hl(0, "@lsp.type.macro.rust", { link = "Macro" })
-    end, 50)
-  end,
-})

after/plugin/lsp.lua

@@ -1,6 +1,13 @@
 -- LANGUAGE SERVERS
+local lsp_zero = require('lsp-zero')
 local lsp_capabilities = require("cmp_nvim_lsp").default_capabilities()
 
+lsp_zero.on_attach(function(client, bufnr)
+  -- see :help lsp-zero-keybindings
+  -- to learn the available actions
+  lsp_zero.default_keymaps({buffer = bufnr})
+end)
+
 -- LUA
 vim.lsp.config('lua_ls', {
   settings = {
@@ -53,10 +60,6 @@ vim.keymap.set("n", "<leader>gf", ":GoFmt<CR>",
     { noremap = true, silent = true, desc = "Go Format" }
 )
 
-vim.keymap.set("n", "<leader>ff", "<cmd>lua vim.lsp.buf.format()<CR>",
-    { desc = "Format Code" }
-)
-
 -- AUTOCOMPLETION
 
 local cmp = require('cmp')