file name change

modules/core/njalla.nix

@@ -0,0 +1,32 @@
+{ config, pkgs, lib, ... }:
+
+{
+  # ── Ensure njalla directory and base script exist on every build ──
+  systemd.tmpfiles.rules = [
+    "d /var/lib/njalla 0750 root root -"
+  ];
+
+  # ── Create base njalla.sh if it doesn't exist yet ────────────
+  systemd.services.njalla-init = {
+    description = "Initialize Njal.la DDNS script if missing";
+    wantedBy = [ "multi-user.target" ];
+    serviceConfig = {
+      Type = "oneshot";
+      RemainAfterExit = true;
+    };
+    unitConfig = {
+      ConditionPathExists = "!/var/lib/njalla/njalla.sh";
+    };
+    script = ''
+      cat > /var/lib/njalla/njalla.sh <<'SCRIPT'
+#!/usr/bin/env bash
+IP=$(dig @resolver4.opendns.com myip.opendns.com +short -4)
+
+## Add DDNS entries below — one curl per line
+## Run 'sudo sovran-setup-domains' to configure automatically
+SCRIPT
+
+      chmod 700 /var/lib/njalla/njalla.sh
+    '';
+  };
+}