nixos-config/modules/home/discord/theme-template.nix

{
  xdg.configFile."Vencord/themes/custom.css".text = '' 
    /**
    * @name Catppuccin Mocha
    * @author winston#0001
    * @authorId 505490445468696576
    * @version 0.2.0
    * @description 🎮 Soothing pastel theme for Discord
    * @website https://github.com/catppuccin/discord
    * @invite r6Mdz5dpFc
    * **/

    @import url("https://catppuccin.github.io/discord/dist/catppuccin-mocha.theme.css");
  '';
}