return {
  {
    'hrsh7th/nvim-cmp',
    priority = 900,
    lazy = false,
    dependencies = {
      {
        'andersevenrud/cmp-tmux',
        cond = function() return vim.fn.has('gui_running') == 0 end
      },
      {
        'hrsh7th/cmp-nvim-lsp'
      },
      {
        'hrsh7th/cmp-nvim-lsp-signature-help'
      },
      {
        'hrsh7th/cmp-nvim-lsp-document-symbol'
      },
      {
        'hrsh7th/cmp-buffer'
      },
      {
        'hrsh7th/cmp-path'
      },
      {
        'hrsh7th/cmp-cmdline'
      },
      {
        'hrsh7th/cmp-vsnip',
        dependencies = {
          'hrsh7th/vim-vsnip',
        },
      },
      {
        'onsails/lspkind.nvim',
      },
    },
    config = function()
      local cmp = require('cmp')
      local lspkind = require('lspkind')
      cmp.setup({
        snippet = {
          -- REQUIRED - you must specify a snippet engine
          expand = function(args)
            vim.fn["vsnip#anonymous"](args.body) -- For `vsnip` users.
          end,
        },
        view = {
          entries = { name = 'custom', selection_order = 'near_cursor' }
        },
        mapping = cmp.mapping.preset.insert({
          ['<C-b>'] = cmp.mapping.scroll_docs(-4),
          ['<C-f>'] = cmp.mapping.scroll_docs(4),
          ['<C-Space>'] = cmp.mapping.complete(),
          ['<C-e>'] = cmp.mapping.abort(),
          ['<CR>'] = cmp.mapping.confirm({ select = true }), -- Accept currently selected item. Set `select` to `false` to only confirm explicitly selected items.
        }),
        sources = cmp.config.sources({
          { name = 'nvim_lsp' },
          { name = 'nvim_lsp_signature_help' },
          { name = 'vsnip' }, -- For vsnip users.
        }, {
          { name = 'buffer' },
        }, {
          { name = 'tmux' },
        }),
        formatting = {
          format = lspkind.cmp_format({
            mode = 'symbol', -- show only symbol annotations
            maxwidth = 50,   -- prevent the popup from showing more than provided characters (e.g 50 will not show more than 50 characters)
            -- can also be a function to dynamically calculate max width such as
            -- maxwidth = function() return math.floor(0.45 * vim.o.columns) end,
            ellipsis_char = '...',    -- when popup menu exceed maxwidth, the truncated part would show ellipsis_char instead (must define maxwidth first)
            show_labelDetails = true, -- show labelDetails in menu. Disabled by default
          })
        },
      })

      -- Use buffer source for `/` (if you enabled `native_menu`, this won't work anymore).
      cmp.setup.cmdline('/', {
        sources = cmp.config.sources({
          { name = 'nvim_lsp_document_symbol' }
        }, {
          { name = 'buffer' }
        })
      })

      -- Use cmdline & path source for ':' (if you enabled `native_menu`, this won't work anymore).
      cmp.setup.cmdline(':', {
        sources = cmp.config.sources({
          { name = 'path' }
        }, {
          { name = 'cmdline' }
        })
      })
    end,
  },
}