Neovim home module does not work correctly

First of all, set number relativenumber does not seem to work at all. Second of all, neither does the plugin autostart even if the instruction is there. Does anyone know why?

programs.neovim = {
   enable = true;
   defaultEditor = true;
   viAlias = true;
   vimAlias = true;
   extraConfig = ''
    set number relativenumber
  '';
   plugins = [
   {
    plugin = pkgs.vimPlugins.coq_nvim;
    config = "
    let g:coq_settings = { 'auto_start': 'shut-up' }                  
    ";
   }
];
};