{
  pkgs,
  service_configs,
  config,
  inputs,
  lib,
  ...
}:
{
  services.llama-cpp = {
    enable = true;
    model = builtins.toString (
      pkgs.fetchurl {
        url = "https://huggingface.co/mradermacher/Qwen3.5-27B-Claude-4.6-Opus-Reasoning-Distilled-GGUF/resolve/main/Qwen3.5-27B-Claude-4.6-Opus-Reasoning-Distilled.Q5_K_M.gguf";
        sha256 = "1b08df702dc729104de8894d3f6c6f52505e9f07c5d9b236b3efda3ae187bda2";
      }
    );
    port = service_configs.ports.private.llama_cpp.port;
    host = "0.0.0.0";
    package = (lib.optimizePackage inputs.llamacpp.packages.${pkgs.system}.vulkan);
    extraFlags = [
      "-ngl"
      "12"
      "-c"
      "16384"
    ];
  };

  # have to do this in order to get vulkan to work
  systemd.services.llama-cpp.serviceConfig.DynamicUser = lib.mkForce false;

  services.caddy.virtualHosts."llm.${service_configs.https.domain}".extraConfig = ''
    import ${config.age.secrets.caddy_auth.path}
    reverse_proxy :${builtins.toString config.services.llama-cpp.port}
  '';
}