Is there any method to map keys to functions now?

[Tgist1024]

I remember using keymap to call function was possible in a former version.
Now I want to add a plugin that has a quick setup like this:

local ht = require('haskell-tools')
local def_opts = { noremap = true, silent = true, }
ht.setup {
  hls = {
    on_attach = function(client, bufnr)
      local opts = vim.tbl_extend('keep', def_opts, { buffer = bufnr, })
      -- haskell-language-server relies heavily on codeLenses,
      -- so auto-refresh (see advanced configuration) is enabled by default
      vim.keymap.set('n', '<space>ca', vim.lsp.codelens.run, opts)
      vim.keymap.set('n', '<space>hs', ht.hoogle.hoogle_signature, opts)
    end,
  },
}
-- Suggested keymaps that do not depend on haskell-language-server
-- Toggle a GHCi repl for the current package
vim.keymap.set('n', '<leader>rr', ht.repl.toggle, def_opts)
-- Toggle a GHCi repl for the current buffer
vim.keymap.set('n', '<leader>rf', function()
  ht.repl.toggle(vim.api.nvim_buf_get_name(0))
end, def_opts)
vim.keymap.set('n', '<leader>rq', ht.repl.quit, def_opts)

It seems present keymap functions like map_cu, map_cr or any others could not call functions like above. All of them do is just pass a string into the same function.
So I need some help to solve this.
Or maybe what I should do is just put the setup in my custom config? (Seems not bad for the ease)

[CharlesChiuGit]

nvimdots/lua/keymap/bind.lua

Lines 137 to 142 in b3fb465

	---@param callback fun():nil
	---@return map_rhs
	function bind.map_callback(callback)
	local ro = rhs_options:new()
	return ro:map_callback(callback)
	end

is how u set functions to keymaps.

Here's an example:

nvimdots/lua/keymap/tool.lua

Lines 129 to 134 in b3fb465

	["n|<leader>fw"] = map_callback(function()
	require("telescope").extensions.live_grep_args.live_grep_args()
	end)
	:with_noremap()
	:with_silent()
	:with_desc("find: Word in project"),

As u can see it's contains a function.

[Tgist1024]

Thanks a lot!