(example) lsp configuration without lsp-zero

after/plugin/lsp.lua

@@ -1,60 +1,88 @@
-local lsp = require("lsp-zero")
+vim.api.nvim_create_autocmd('LspAttach', {
+  desc = 'LSP keybindings',
+  callback = function(event)
+    local opts = {buffer = event.buf}
 
-lsp.preset("recommended")
-
-lsp.ensure_installed({
-  'tsserver',
-  'rust_analyzer',
+    vim.keymap.set("n", "gd", function() vim.lsp.buf.definition() end, opts)
+    vim.keymap.set("n", "K", function() vim.lsp.buf.hover() end, opts)
+    vim.keymap.set("n", "<leader>vws", function() vim.lsp.buf.workspace_symbol() end, opts)
+    vim.keymap.set("n", "<leader>vd", function() vim.diagnostic.open_float() end, opts)
+    vim.keymap.set("n", "[d", function() vim.diagnostic.goto_next() end, opts)
+    vim.keymap.set("n", "]d", function() vim.diagnostic.goto_prev() end, opts)
+    vim.keymap.set("n", "<leader>vca", function() vim.lsp.buf.code_action() end, opts)
+    vim.keymap.set("n", "<leader>vrr", function() vim.lsp.buf.references() end, opts)
+    vim.keymap.set("n", "<leader>vrn", function() vim.lsp.buf.rename() end, opts)
+    vim.keymap.set("i", "<C-h>", function() vim.lsp.buf.signature_help() end, opts)
+  end
 })
 
--- Fix Undefined global 'vim'
-lsp.nvim_workspace()
+local lspconfig = require('lspconfig')
+local lsp_capabilities = require('cmp_nvim_lsp').default_capabilities()
 
+require('mason').setup({})
+require('mason-lspconfig').setup({
+  ensure_installed = {
+    'tsserver',
+    'lua_ls',
+    'rust_analyzer',
+  },
+  handlers = {
+    function(server)
+      lspconfig[server].setup({
+        capabilities = lsp_capabilities,
+      })
+    end,
+    lua_ls = function()
+      lspconfig.lua_ls.setup({
+        capabilities = lsp_capabilities,
+        settings = {
+          Lua = {
+            runtime = {
+              version = 'LuaJIT',
+            },
+            diagnostics = {
+              globals = {'vim'}
+            },
+            workspace = {
+              library = {
+                vim.env.VIMRUNTIME,
+              }
+            }
+          }
+        }
+      })
+    end
+  }
+})
 
 local cmp = require('cmp')
 local cmp_select = {behavior = cmp.SelectBehavior.Select}
-local cmp_mappings = lsp.defaults.cmp_mappings({
-  ['<C-p>'] = cmp.mapping.select_prev_item(cmp_select),
-  ['<C-n>'] = cmp.mapping.select_next_item(cmp_select),
-  ['<C-y>'] = cmp.mapping.confirm({ select = true }),
-  ["<C-Space>"] = cmp.mapping.complete(),
-})
 
-cmp_mappings['<Tab>'] = nil
-cmp_mappings['<S-Tab>'] = nil
+--- loads custom snippets from friendly-snippets
+-- require('luasnip.loaders.from_vscode').lazy_load()
 
-lsp.setup_nvim_cmp({
-  mapping = cmp_mappings
+cmp.setup({
+  sources = {
+    {name = 'path'},
+    {name = 'nvim_lsp'},
+    {name = 'nvim_lua'},
+    -- {name = 'buffer', keyword_length = 3},
+    -- {name = 'luasnip', keyword_length = 2},
+  },
+  mapping = cmp.mapping.preset.insert({
+    ['<C-p>'] = cmp.mapping.select_prev_item(cmp_select),
+    ['<C-n>'] = cmp.mapping.select_next_item(cmp_select),
+    ['<C-y>'] = cmp.mapping.confirm({ select = true }),
+    ['<C-Space>'] = cmp.mapping.complete(),
+    -- ['<C-b>'] = cmp.mapping.scroll_docs(-4),
+    -- ['<C-f>'] = cmp.mapping.scroll_docs(4),
+  }),
+  window = {
+    documentation = cmp.config.window.bordered(),
+  },
+  snippet = {
+    expand = function(args)
+      require('luasnip').lsp_expand(args.body)
+    end,
+  },
 })
-
-lsp.set_preferences({
-    suggest_lsp_servers = false,
-    sign_icons = {
-        error = 'E',
-        warn = 'W',
-        hint = 'H',
-        info = 'I'
-    }
-})
-
-lsp.on_attach(function(client, bufnr)
-  local opts = {buffer = bufnr, remap = false}
-
-  vim.keymap.set("n", "gd", function() vim.lsp.buf.definition() end, opts)
-  vim.keymap.set("n", "K", function() vim.lsp.buf.hover() end, opts)
-  vim.keymap.set("n", "<leader>vws", function() vim.lsp.buf.workspace_symbol() end, opts)
-  vim.keymap.set("n", "<leader>vd", function() vim.diagnostic.open_float() end, opts)
-  vim.keymap.set("n", "[d", function() vim.diagnostic.goto_next() end, opts)
-  vim.keymap.set("n", "]d", function() vim.diagnostic.goto_prev() end, opts)
-  vim.keymap.set("n", "<leader>vca", function() vim.lsp.buf.code_action() end, opts)
-  vim.keymap.set("n", "<leader>vrr", function() vim.lsp.buf.references() end, opts)
-  vim.keymap.set("n", "<leader>vrn", function() vim.lsp.buf.rename() end, opts)
-  vim.keymap.set("i", "<C-h>", function() vim.lsp.buf.signature_help() end, opts)
-end)
-
-lsp.setup()
-
-vim.diagnostic.config({
-    virtual_text = true
-})
-

lua/theprimeagen/packer.lua

@@ -47,11 +47,9 @@ return require('packer').startup(function(use)
   use("nvim-treesitter/nvim-treesitter-context");
 
   use {
-	  'VonHeikemen/lsp-zero.nvim',
-	  branch = 'v1.x',
+      'neovim/nvim-lspconfig',
 	  requires = {
 		  -- LSP Support
-		  {'neovim/nvim-lspconfig'},
 		  {'williamboman/mason.nvim'},
 		  {'williamboman/mason-lspconfig.nvim'},