{ helpers, ... }:
{
  plugins = {
    neoscroll = {
      enable = true;
      settings = {
        easing_function = "sine";
      };
    };
  };
  # https://github.com/karb94/neoscroll.nvim
  extraConfigLua = ''
    neoscroll = require('neoscroll')
    local keymap = {
      ["<C-u>"] = function() neoscroll.ctrl_u({ duration = 80 }) end;
      ["<C-d>"] = function() neoscroll.ctrl_d({ duration = 80 }) end;
      ["<C-b>"] = function() neoscroll.ctrl_b({ duration = 80 }) end;
      ["<C-f>"] = function() neoscroll.ctrl_f({ duration = 80 }) end;
      ["<C-y>"] = function() neoscroll.scroll(-0.1, { move_cursor=false; duration = 40 }) end;
      ["<C-e>"] = function() neoscroll.scroll(0.1, { move_cursor=false; duration = 40 }) end;
      ["zt"]    = function() neoscroll.zt({ half_win_duration = 80 }) end;
      ["zz"]    = function() neoscroll.zz({ half_win_duration = 80 }) end;
      ["zb"]    = function() neoscroll.zb({ half_win_duration = 80 }) end;
    }
    local modes = { 'n', 'v', 'x' }
    for key, func in pairs(keymap) do
      vim.keymap.set(modes, key, func)
    end
  '';
}