redo autocompletion setup

nvim/lua/autocompletion.lua

@@ -26,42 +26,14 @@ cmp.setup({
     { name = 'nvim_lsp',
       entry_filter = function(entry, ctx)
         return require('cmp.types').lsp.CompletionItemKind[entry:get_kind()] ~= 'Text'
-      end
+      end,
     },
     { name = 'luasnip' },
-    { name = 'buffer' },
-  })
-})
-
--- Use buffer source for `vimwiki`
-cmp.setup.cmdline('vimwiki', {
-  sources = {
-    { name = 'nvim_lsp' },
-    { name = 'luasnip' },
-    { name = 'buffer' }
-  }
-})
-
-cmp.setup.cmdline('md', {
-  sources = {
-    { name = 'nvim_lsp' },
-    { name = 'luasnip' },
-    { name = 'buffer' }
-  }
-})
-
-cmp.setup.cmdline('tex', {
-  sources = {
-    { name = 'nvim_lsp' },
-    { name = 'luasnip' },
-    { name = 'buffer' }
-  }
-})
-
--- Use buffer source for `/`
-cmp.setup.cmdline('/', {
-  sources = {
-    { name = 'buffer' }
+    { name = 'buffer', keyword_length = 5 },
+  }),
+  experimental = {
+    native_menu = false,
+    ghost_text = true,
   }
 })
 
@@ -82,7 +54,6 @@ local on_attach = function(client, bufnr)
   local opts = { noremap = true, silent = true }
   buf_set_keymap("n", "gd", "<cmd>Telescope lsp_definitions<CR>", opts)
   buf_set_keymap("n", "gD", "<cmd>Telescope lsp_implementations<CR>", opts)
-  -- buf_set_keymap("n", "gr", "<cmd>Telescope lsp_references<CR>", opts)
   vim.keymap.set("n", "gf", vim.lsp.buf.format)
   vim.keymap.set("n", "gh", vim.lsp.buf.hover)
   vim.keymap.set("n", "ge", vim.diagnostic.open_float)
@@ -91,16 +62,34 @@ local on_attach = function(client, bufnr)
   vim.keymap.set("n", "gH", vim.lsp.buf.code_action)
 end
 
-local lsp_installer = require 'nvim-lsp-installer'
-lsp_installer.on_server_ready(function(server)
-  local opts = {}
-  opts.on_attach = on_attach
-  opts.capabilities = require('cmp_nvim_lsp').update_capabilities(vim.lsp.protocol.make_client_capabilities())
+-- LSP INSTALLER
+local lsp_installer = require "nvim-lsp-installer"
+lsp_installer.setup {
+  automatic_installation = false,
+}
 
-  server:setup(opts)
-  vim.cmd [[ do User LspAttachBuffers ]]
-end)
+local lspconfig = require "lspconfig"
 
+for _, server in ipairs(lsp_installer.get_installed_servers()) do
+  lspconfig[server.name].setup {
+    on_attach = on_attach,
+    capabilities = require("cmp_nvim_lsp").update_capabilities(vim.lsp.protocol.make_client_capabilities())
+  }
+end
+
+-- EXTRA SETUP
+lspconfig.sumneko_lua.setup {
+  settings = {
+    Lua = {
+      diagnostics = {
+        -- Get the language server to recognize the `vim` global
+        globals = { 'vim' },
+      },
+    },
+  },
+}
+
+-- LSP SIGNATURE
 require "lsp_signature".setup {
   handler_opts = {
     border = "rounded"