feat(nix): add nix-auth and update flake-utils dependencies

nixos/ryu/services/llama.nix

@@ -1,13 +1,11 @@
 {
-  inputs,
   pkgs,
-  lib,
   config,
   ...
 }: {
   services = {
     llama-cpp = {
-      enable = false;
+      enable = true;
       port = 11435;
       model = pkgs.fetchurl {
         url = "https://huggingface.co/lmstudio-community/gpt-oss-20b-GGUF/resolve/main/gpt-oss-20b-MXFP4.gguf";
@@ -15,6 +13,9 @@
       };
       # package = pkgs.ik_llama;
     };
+    ollama = {
+      enable = true;
+    };
     caddy = {
       virtualHosts."llama.ryu.darksailor.dev".extraConfig = ''
         import hetzner
@@ -22,4 +23,7 @@
       '';
     };
   };
+  # environment.systemPackages = with pkgs; [
+  #     vllm
+  # ];
 }