return {
{{- if eq .chezmoi.os "openbsd" }}
    -- snippets
    {
        "L3MON4D3/LuaSnip",
        build = (not jit.os:find("Windows"))
            and "echo 'NOTE: jsregexp is optional, so not a big deal if it fails to build'; make install_jsregexp"
            or nil,
        dependencies = {
            "rafamadriz/friendly-snippets",
            config = function()
                require("luasnip.loaders.from_vscode").lazy_load()
            end,
        },
        opts = {
            history = true,
            delete_check_events = "TextChanged",
        },
        -- stylua: ignore
        keys = {
            {
                "<tab>",
                function()
                    return require("luasnip").jumpable(1) and "<Plug>luasnip-jump-next" or "<tab>"
                end,
                expr = true,
                silent = true,
                mode = "i",
            },
            { "<tab>",   function() require("luasnip").jump(1) end,  mode = "s" },
            { "<s-tab>", function() require("luasnip").jump(-1) end, mode = { "i", "s" } },
        },
    },

    -- auto completion
    {
        "hrsh7th/nvim-cmp",
        version = false, -- last release is way too old
        event = "InsertEnter",
        dependencies = {
            "hrsh7th/cmp-nvim-lsp",
            "hrsh7th/cmp-buffer",
            "hrsh7th/cmp-path",
            "saadparwaiz1/cmp_luasnip",
        },
        opts = function()
            vim.api.nvim_set_hl(0, "CmpGhostText", { link = "Comment", default = true })
            local luasnip = require('luasnip')
            local lspkind = require('lspkind')
            local cmp = require("cmp")
            local defaults = require("cmp.config.default")()
            return {
                completion = {
                    completeopt = "menu,menuone,noinsert",
                },
                snippet = {
                    expand = function(args)
                        require("luasnip").lsp_expand(args.body)
                    end,
                },
                mapping = cmp.mapping.preset.insert({
                    ["<C-n>"] = cmp.mapping.select_next_item({ behavior = cmp.SelectBehavior.Insert }),
                    ["<C-p>"] = cmp.mapping.select_prev_item({ behavior = cmp.SelectBehavior.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.
                    ["<S-CR>"] = cmp.mapping.confirm({
                        behavior = cmp.ConfirmBehavior.Replace,
                        select = true,
                    }), -- Accept currently selected item. Set `select` to `false` to only confirm explicitly selected items.
                    ["<C-CR>"] = function(fallback)
                        cmp.abort()
                        fallback()
                    end,
                }),
                sources = cmp.config.sources({
                    { name = "nvim_lsp", keyword_length = 1 },
                    { name = "luasnip",  keyword_length = 2 },
                    { name = "path" },
                }, {
                    { name = "buffer", keyword_length = 3 },
                }),
                formatting = {
                    format = lspkind.cmp_format({
                        mode = 'symbol_text', -- 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)
                    })
                },
                experimental = {
                    ghost_text = {
                        hl_group = "CmpGhostText",
                    },
                },
                sorting = defaults.sorting,
            }
        end,
        config = function(_, opts)
            for _, source in ipairs(opts.sources) do
                source.group_index = source.group_index or 1
            end
            require("cmp").setup(opts)
        end,
    },
{{ else }}
  {
    "hrsh7th/nvim-cmp",
    opts = function(_, opts)
      local cmp = require("cmp")
      opts.sources = cmp.config.sources(vim.list_extend(opts.sources, { { name = "neorg" } }))
    end,
  },
{{ end }}
  {
    "windwp/nvim-autopairs",
    event = "InsertEnter",
    opts = {
      fast_wrap = {},
    },
  },
}