Specify ip_prefixes for headscale

modules/services/headscale/default.nix

@@ -4,6 +4,7 @@ with lib;
 
 let
   cfg = config.modules.services.headscale;
+  fqdn = "headscale.vimium.net";
 in {
   options.modules.services.headscale = {
     enable = mkOption {
@@ -13,8 +14,27 @@ in {
   };
 
   config = mkIf cfg.enable {
+    environment.systemPackages = [ pkgs.headscale ];
+
+    services.headscale = {
+      enable = true;
+
+      port = 8080;
+
+      settings = {
+        ip_prefixes = [
+          "100.64.0.0/10"
+        ];
+        server_url = "https://${fqdn}";
+        dns_config = {
+          base_domain = "vimium.net";
+        };
+        logtail.enabled = false;
+      };
+    };
+
     services.nginx.virtualHosts = {
-      "headscale.vimium.net" = {
+      "${fqdn}" = {
         forceSSL = true;
         enableACME = true;
         locations."/" = {
@@ -23,21 +43,5 @@ in {
         };
       };
     };
-
-    services.headscale = {
-      enable = true;
-      port = 8080;
-      settings = {
-        server_url = "https://headscale.vimium.net";
-        dns_config = {
-          base_domain = "vimium.net";
-        };
-        logtail.enabled = false;
-      };
-    };
-
-    environment.systemPackages = with pkgs; [
-      config.services.headscale.package
-    ];
   };
 }