feat(nvim): add gen.nvim and ollama service

modules/services/ollama.nix

@@ -0,0 +1,27 @@
+{ lib, config, pkgs, ... }:
+
+with lib;
+let
+  cfg = config.my.services.ollama;
+in
+{
+  options.my.services.ollama = {
+    enable = mkEnableOption "ollama";
+    package = mkOption {
+      type = types.package;
+      default = pkgs.ollama;
+    };
+  };
+
+  config = mkIf cfg.enable {
+    systemd.user.services.ollama = {
+      after = [ "network.target" ];
+      serviceConfig = {
+        Type = "simple";
+        Restart = "on-failure";
+        RestartSec = "1s";
+        ExecStart = "${getExe cfg.package} serve";
+      };
+    };
+  };
+}