Refactor: Avoid use folder for one file

Fix #3

modules/system/services/ollama.nix

@@ -0,0 +1,21 @@
+{ config, lib, ... }:
+
+with lib;
+let
+  cfg = config.modules.system.services.ollama;
+  nvidiaEnabled = config.modules.system.hardware.nvidia.enable;
+in
+{
+  options.modules.system.services.ollama = {
+    enable = mkEnableOption ''
+      Enable ollama with my custom configurations
+    '';
+  };
+  config = mkIf cfg.enable {
+    services.ollama = {
+      enable = true;
+
+      acceleration = if nvidiaEnabled then "cuda" else null;
+    };
+  };
+}