transition from nvim-compe to nvim-cmp

lua/config/compe.lua

@@ -1,38 +0,0 @@
--- nvim-compe settings
-require("compe").setup({
-  enabled = true,
-  autocomplete = true,
-  debug = false,
-  min_length = 1,
-  preselect = "enable",
-  throttle_time = 80,
-  source_timeout = 200,
-  incomplete_delay = 400,
-  max_abbr_width = 100,
-  max_kind_width = 100,
-  max_menu_width = 100,
-  documentation = true,
-
-  source = {
-    omni = { filetypes = { "tex" } },
-    path = true,
-    buffer = false,
-    spell = { filetypes = { "markdown", "tex" } },
-    emoji = true,
-    nvim_lsp = true,
-    nvim_lua = true,
-    ultisnips = true,
-    calc = false,
-    vsnip = false,
-  },
-})
-
-vim.o.completeopt = "menuone,noselect"
-
--- nvim-compe mappings
-local compe_map_opts = { expr = true, noremap = true, silent = true }
-vim.api.nvim_set_keymap("i", "<C-Space>", "compe#complete()", compe_map_opts)
-vim.api.nvim_set_keymap("i", "<CR>", "compe#confirm('<CR>')", compe_map_opts)
-vim.api.nvim_set_keymap("i", "<ESC>", "compe#close('<ESC>')", compe_map_opts)
-vim.api.nvim_set_keymap("i", "<C-f>", "compe#scroll({'delta': +4})", compe_map_opts)
-vim.api.nvim_set_keymap("i", "<C-d>", "compe#scroll({'delta': -4})", compe_map_opts)

lua/config/lsp.lua

@@ -66,7 +66,7 @@ local custom_attach = function(client, bufnr)
   -- vim.notify(msg, 'info', {title = 'Nvim-config', timeout = 2500})
 end
 
-local capabilities = vim.lsp.protocol.make_client_capabilities()
+capabilities = require('cmp_nvim_lsp').update_capabilities(vim.lsp.protocol.make_client_capabilities())
 capabilities.textDocument.completion.completionItem.snippetSupport = true
 
 local lspconfig = require("lspconfig")
@@ -88,10 +88,12 @@ lspconfig.pylsp.setup({
   flags = {
     debounce_text_changes = 200,
   },
+  capabilities = capabilities,
 })
 
 -- lspconfig.pyright.setup{
 --   on_attach = custom_attach,
+--   capabilities = capabilities
 -- }
 
 lspconfig.clangd.setup({
@@ -109,6 +111,7 @@ lspconfig.vimls.setup({
   flags = {
     debounce_text_changes = 500,
   },
+  capabilities = capabilities,
 })
 
 local sumneko_binary_path = vim.fn.exepath("lua-language-server")
@@ -144,6 +147,7 @@ if vim.g.is_mac or vim.g.is_linux and sumneko_binary_path ~= "" then
         },
       },
     },
+    capabilities = capabilities,
   })
 end
 

lua/config/nvim-cmp.lua

@@ -0,0 +1,41 @@
+-- Setup nvim-cmp.
+local cmp = require'cmp'
+
+cmp.setup({
+  snippet = {
+    expand = function(args)
+      -- For `ultisnips` user.
+      vim.fn["UltiSnips#Anon"](args.body)
+    end,
+  },
+  mapping = {
+    ['<Tab>'] = function(fallback)
+      if cmp.visible() then
+        cmp.select_next_item()
+      else
+        fallback()
+      end
+    end,
+    ['<S-Tab>'] = function(fallback)
+      if cmp.visible() then
+        cmp.select_prev_item()
+      else
+        fallback()
+      end
+    end,
+    ['<Esc>'] = cmp.mapping.close(),
+  },
+  sources = {
+    { name = 'nvim_lsp' }, -- For nvim-lsp
+    { name = 'ultisnips' }, -- For ultisnips user.
+    { name = 'path' }, -- for path completion
+    { name = 'emoji', insert = true, } -- emoji completion
+  },
+  completion = {
+    keyword_length = 1,
+    completeopt = "menu,menuone,noinsert"
+  },
+  experimental = {
+    ghost_text = false
+  }
+})

lua/plugins.lua

@@ -27,10 +27,16 @@ require("packer").startup({
     use({"wbthomason/packer.nvim", opt = true})
 
     -- nvim-lsp configuration
-    use({ "neovim/nvim-lspconfig", event = 'VimEnter', config = [[require('config.lsp')]] })
+    use({ "neovim/nvim-lspconfig", after = "cmp-nvim-lsp", config = [[require('config.lsp')]] })
 
     -- auto-completion engine
-    use({ "hrsh7th/nvim-compe", event = "InsertEnter *", config = [[require('config.compe')]] })
+    use {"hrsh7th/nvim-cmp", event = "InsertEnter", config = [[require('config.nvim-cmp')]]}
+
+    -- nvim-cmp completion sources
+    use {"hrsh7th/cmp-nvim-lsp", event = "VimEnter"}
+    use {"hrsh7th/cmp-path", after = "nvim-cmp"}
+    use {"quangnguyen30192/cmp-nvim-ultisnips", after = {'nvim-cmp', 'ultisnips'}}
+    use {"hrsh7th/cmp-emoji", after = 'nvim-cmp'}
 
     if vim.g.is_mac then
       use({ "nvim-treesitter/nvim-treesitter", event = 'BufEnter', run = ":TSUpdate", config = [[require('config.treesitter')]] })
@@ -57,7 +63,7 @@ require("packer").startup({
 
     -- Super fast movement with vim-sneak
     use({"justinmk/vim-sneak", event = "VimEnter"})
-    use { 'phaazon/hop.nvim', as = 'hop', config = [[require('hop').setup()]] }
+    use { 'phaazon/hop.nvim', event = "VimEnter", config = [[require('hop').setup()]] }
 
     -- Clear highlight search automatically for you
     use({"romainl/vim-cool", event = "VimEnter"})
@@ -306,7 +312,7 @@ require("packer").startup({
     use("gelguy/wilder.nvim")
 
     -- showing keybindings
-    use {"folke/which-key.nvim", config = [[require('config.which-key')]]}
+    use {"folke/which-key.nvim", event = "VimEnter", config = [[require('config.which-key')]]}
   end,
   config = {
     max_jobs = 16,