[headscale] Add headscale

lib/modules/headscale/default.nix

@@ -0,0 +1,27 @@
+{config, pkgs, ...}:
+
+let
+
+  domain = "enclave.ctsk.dev";
+  port = 10020;
+
+in {
+
+  services.headscale = {
+    address = "127.0.0.1";
+    port = port;
+    settings = {
+      server_url = "https://${domain}";
+    };
+  };
+
+  services.nginx.virtualHosts."${domain}" = {
+    forceSSL = true;
+    enableACME = true;
+    locations."/".proxyPass = "http://127.0.0.1:${toString port}";
+    locations."/".proxyWebsockets = true;
+  };
+
+  environment.systemPackages = [ pkgs.headscale ];
+
+}