llama-cpp: fix model name

services/llama-cpp/llama-cpp.nix

@@ -9,13 +9,15 @@
 }:
 let
   cfg = config.services.llama-cpp;
+  modelUrl = "https://huggingface.co/unsloth/gemma-4-E4B-it-GGUF/resolve/main/gemma-4-E4B-it-Q4_K_M.gguf";
+  modelAlias = lib.removeSuffix ".gguf" (builtins.baseNameOf modelUrl);
 in
 {
   services.llama-cpp = {
     enable = true;
     model = toString (
       pkgs.fetchurl {
-        url = "https://huggingface.co/unsloth/gemma-4-E4B-it-GGUF/resolve/main/gemma-4-E4B-it-Q4_K_M.gguf";
+        url = modelUrl;
         sha256 = "sha256-4bxEJwn+eAqksuybIsFqf83/VC8X8B7Q4yAxFNKPnzQ=";
       }
     );
@@ -36,6 +38,8 @@ in
       "--api-key-file"
       config.age.secrets.llama-cpp-api-key.path
       "--metrics"
+      "--alias"
+      modelAlias
     ];
   };