add voxtype

hosts/radish/packages.nix

@@ -51,10 +51,12 @@ in
 
     ollama = {
       enable = true;
-      acceleration = "rocm";
-      environmentVariables = {
-        HSA_OVERRIDE_GFX_VERSION = "11.0.3";
-      };
+      package = pkgs-unstable.ollama-vulkan;
+      syncModels = true;
+      loadModels = [
+        "qwen3:4b-instruct"
+        "qwen3:8b"
+      ];
     };
 
     borgbackup.jobs.root = {
@@ -139,4 +141,31 @@ in
   environment.etc."1password/custom_allowed_browsers".text = ''
     vivaldi
   '';
+
+  systemd.services.ollama-keep-alive =
+    let
+      ollamaURL = "http://localhost:${toString config.services.ollama.port}/api/generate";
+      payload = {
+        model = lib.elemAt config.services.ollama.loadModels 0;
+        keep_alive = -1;
+      };
+    in
+    {
+      enable = true;
+      description = "Keep Ollama primary model loaded by pinging it";
+      after = [
+        "ollama.service"
+        "network-online.target"
+      ];
+      wants = [ "network-online.target" ];
+      bindsTo = [ "ollama.service" ];
+      wantedBy = [
+        "multi-user.target"
+        "ollama.service"
+      ];
+      serviceConfig = {
+        Type = "oneshot";
+        ExecStart = "${pkgs.curl}/bin/curl -s '${ollamaURL}' -d '${builtins.toJSON payload}'";
+      };
+    };
 }