return require('packer').startup(function()
    -- Packer can manage itself
    use 'wbthomason/packer.nvim'
    -- gruvbox theme
    use {
        "ellisonleao/gruvbox.nvim",
        requires = {"rktjmp/lush.nvim"}
    }
    use 'shaunsingh/nord.nvim'
    use 'glepnir/zephyr-nvim'
    -- nvim-tree (新增)
    use {
        'kyazdani42/nvim-tree.lua',
        requires = 'kyazdani42/nvim-web-devicons'
    }
    -- treesitter
    use { 'nvim-treesitter/nvim-treesitter', run = ':TSUpdate' }
    -- lspconfig
    use {'neovim/nvim-lspconfig', 'williamboman/nvim-lsp-installer'}
    -- nvim-cmp
    use 'hrsh7th/cmp-nvim-lsp' -- { name = nvim_lsp }
    use 'hrsh7th/cmp-buffer'   -- { name = 'buffer' },
    use 'hrsh7th/cmp-path'     -- { name = 'path' }
    use 'hrsh7th/cmp-cmdline'  -- { name = 'cmdline' }
    use 'hrsh7th/nvim-cmp'
    -- vsnip
    use 'hrsh7th/cmp-vsnip'    -- { name = 'vsnip' }
    use 'hrsh7th/vim-vsnip'
    use 'rafamadriz/friendly-snippets'
    -- lspkind
    use 'onsails/lspkind-nvim'
end)