Support auto-completion with LSP

home/.config/nvim/lua/plugins/plugin_list.lua

@@ -65,7 +65,14 @@ local plugin_list = {
     {
         "williamboman/nvim-lsp-installer",
         config = get_plugin_file("lsp.lua"),
-        requires = { "neovim/nvim-lspconfig" },
+        requires = {
+            "neovim/nvim-lspconfig",
+            "hrsh7th/nvim-cmp",
+            "hrsh7th/cmp-nvim-lsp",
+            "hrsh7th/cmp-buffer",
+            "hrsh7th/cmp-path",
+            "hrsh7th/cmp-cmdline",
+        },
     },
     --{
     --    "nvim-telescope/telescope.nvim",

home/.config/nvim/lua/plugins/settings/lsp.lua

@@ -10,6 +10,19 @@ local fn = vim.fn
 require("lsp")
 
 
+-- Configure nvim-cmp to respect LSP completions.
+local cmp = require("cmp")
+
+cmp.setup({
+    sources = {
+        { name = "nvim_lsp" }
+    }
+})
+
+-- The nvim-cmp almost supports LSP's capabilities so you should advertise it to LSP servers
+local cmp_capabilities = vim.lsp.protocol.make_client_capabilities()
+cmp_capabilities = require("cmp_nvim_lsp").update_capabilities(cmp_capabilities)
+
 -- Load in the needed settigns for nvim-lsp-installer plugin.
 -- This ensures automatic installation for the individual language servers.
 local lsp_installer = require("nvim-lsp-installer")
@@ -56,7 +69,8 @@ for _, requested_server in pairs(requested_servers) do
     if server_available then
         -- Setup the server once it will become ready
         server:on_ready(function()
-            local opts = {}
+            -- Advertise completion capabilities by nvim-cmp
+            local opts = { capabilities = cmp_capabilities }
             server:setup(opts)
         end)
         -- If the server isn't yet installed, schedule the installation