return {
    {
        'hrsh7th/nvim-cmp',
        dependencies = {
            -- extra completion plugins
            'hrsh7th/cmp-cmdline',
            'hrsh7th/cmp-path',
            'hrsh7th/cmp-buffer',
            'hrsh7th/cmp-nvim-lsp',
            'hrsh7th/cmp-calc',
            'hrsh7th/cmp-emoji',
            'kdheepak/cmp-latex-symbols',
            -- snippets
            'hrsh7th/cmp-vsnip',
            'hrsh7th/vim-vsnip',
            'onsails/lspkind.nvim'
        },
        config = function(_, opts)
            local cmp = require("cmp");
            cmp.setup({
                snippet = {
                    expand = function(args)
                        vim.fn["vsnip#anonymous"](args.body)
                    end,
                },
                completion = {
                    completeopt = "menu,menuone,noinsert",
                },
                sources = cmp.config.sources({
                    { name = 'nvim_lsp' },
                    { name = 'vsnip' },
                    { name = 'buffer' },
                    { name = 'calc' },
                    { name = 'emoji' },
                    { name = "path" },
                    { name = "cmdline" },
                    { name = "latex_symbols" }
                }),
                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 = false }), -- Accept currently selected item. Set `select` to `false` to only confirm explicitly selected items.
                }),
                formatting = {
                    fields = { "kind", "abbr", "menu" },
                    format = function(entry, item)
                        local kind = require("lspkind").cmp_format({ mode = "symbol_text", maxwidth = 50 })(entry, item)
                        local strings = vim.split(kind.kind, "%s", { trimempty = true })
                        kind.kind = " " .. (strings[1] or "") .. " "
                        kind.menu = "    (" .. (strings[2] or "") .. ")"
                        return kind
                    end
                }
            })
        end
    }
}