return {
    {
        'hrsh7th/cmp-nvim-lsp',
    },
    {
        'hrsh7th/nvim-cmp',

        dependencies = {
            'saadparwaiz1/cmp_luasnip',
            'hrsh7th/cmp-cmdline',
            'L3MON4D3/LuaSnip',
            'rafamadriz/friendly-snippets',
            'onsails/lspkind.nvim',
        },
        event = 'InsertEnter',
        config = function()
            local cmp = require('cmp')
            local lspkind = require('lspkind')

            cmp.setup({
                snippet = {
                    expand = function(args)
                        require('luasnip').lsp_expand(args.body) -- For `luasnip` users.
                        require('luasnip.loaders.from_vscode').lazy_load()
                    end,
                },
                window = {
                    completion = cmp.config.window.bordered(),
                    documentation = cmp.config.window.bordered(),
                },
                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 = 'luasnip' }, -- For luasnip users.
                    { name = 'codeium' },
                }, {
                    { name = 'buffer' },
                }),
                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

                        -- The function below will be called before any actual modifications from lspkind
                        -- so that you can provide more controls on popup customization. (See [#30](https://github.com/onsails/lspkind-nvim/pull/30))
                        before = function(entry, vim_item)
                            return vim_item
                        end,
                    }),
                },
            })
            cmp.setup.cmdline({ '/', '?' }, {
                mapping = cmp.mapping.preset.cmdline(),
                sources = {
                    { name = 'buffer' },
                },
            })

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