nixos-config/modules/system/fonts.nix

{
  pkgs,
  ...
}:
{
  fonts = {
    enableDefaultPackages = true;
    fontconfig.enable = true;
    packages = with pkgs; [
      nerd-fonts.fira-code
      nerd-fonts.jetbrains-mono
      nerd-fonts.symbols-only
      nerd-fonts.geist-mono
      rubik
    ];
  };
}