How to fix lua checks failing on a custom plugin?

[Mach1212]

I wanted to add "colorful-menu" as recommended by blink-cmp.
However some checks fail...

I've seen lib.nixvim.utils.enableExceptInTests but am unsure if that applies to my situation. I have also read I can add dependencies to the plugin to fix the tests. Not sure how to do that either.

Please give me

• resources to learn.
• An example idiomatic solution

Here is how I've setup the plugin:

{pkgs, ...}: {
  extraPlugins = with pkgs; [
    (vimUtils.buildVimPlugin
      {
        pname = "colorful-menu";
        version = "latest";
        src = vimPlugins.colorful-menu-nvim;
        meta.homepage = "https://github.com/xzbdmw/colorful-menu.nvim";
      })
  ];
  extraConfigLua =
    #lua
    ''
      require("colorful-menu").setup({})
    '';
}