fix: wireguard config file permission issue

README.md

@@ -41,6 +41,9 @@
 ## 🌐 VPN
 
 - Wireguard (You need put your own `wg0.conf` file)
+.
+
+> NOTE: If import `wireguard.nix` without config file, the Build will fail.
 
 ---
 

flake.nix

@@ -40,7 +40,6 @@
 
   outputs =
     {
-      self,
       nixpkgs,
       nix-index-database,
       ...
@@ -48,6 +47,11 @@
     let
       system = "x86_64-linux";
       nix-version = "25.05";
+      username = "danny";
+      git-config = {
+        username = "DACHXY";
+        email = "danny10132024@gmail.com";
+      };
     in
     {
       nixosConfigurations = {
@@ -57,7 +61,13 @@
             ./system/dev/dn-pre7780
           ];
           specialArgs = {
-            inherit inputs system nix-version;
+            inherit
+              inputs
+              system
+              nix-version
+              username
+              git-config
+              ;
           };
         };
 
@@ -67,7 +77,13 @@
             ./system/dev/dn-lap
           ];
           specialArgs = {
-            inherit inputs system nix-version;
+            inherit
+              inputs
+              system
+              nix-version
+              username
+              git-config
+              ;
           };
         };
       };

home/user/git.nix

@@ -1,4 +1,4 @@
-{ git-config }:
+{ git-config, ... }:
 let
   userName = git-config.username;
   email = git-config.email;

system/dev/dn-lap/default.nix

@@ -3,16 +3,13 @@
   system,
   inputs,
   nix-version,
+  git-config,
+  username,
   ...
 }:
 
 let
   cursor-size = "24";
-  username = "danny";
-  git-config = {
-    username = "DACHXY";
-    email = "danny10132024@gmail.com";
-  };
 in
 {
   imports = [

system/dev/dn-pre7780/default.nix

@@ -3,16 +3,13 @@
   inputs,
   system,
   nix-version,
+  git-config,
+  username,
   ...
 }:
 
 let
   cursor-size = "32";
-  username = "danny";
-  git-config = {
-    username = "DACHXY";
-    email = "danny10132024@gmail.com";
-  };
 in
 {
   imports = [

system/modules/wireguard.nix

@@ -1,16 +1,12 @@
-{ ... }:
+{ lib, ... }:
 let
   configPath = "/etc/wireguard/wg0.conf";
 in
 {
-  networking.firewall = {
+  networking = {
+    firewall = {
       allowedUDPPorts = [ 51820 ];
     };
-  networking.wg-quick.interfaces.wg0 =
-    if builtins.pathExists configPath then
-      {
-        configFile = configPath;
-      }
-    else
-      { };
+    wg-quick.interfaces.wg0.configFile = configPath;
+  };
 }