configuration/desktop: Migrate networkmanager settings to attribute set

configuration/desktop/networking.nix

@@ -2,12 +2,13 @@
 
 {
 
-  networking.networkmanager.extraConfig = ''
-    [connectivity]
-    uri=http://ping.clerie.de/nm-check.txt
-
-    [global-dns]
-    searches=net.clerie.de
-  '';
+  networking.networkmanager.settings = {
+    connectivity = {
+      uri = "http://ping.clerie.de/nm-check.txt";
+    };
+    global-dns = {
+      searches = "net.clerie.de";
+    };
+  };
 
 }

flake.lock

@@ -268,11 +268,11 @@
     },
     "nixpkgs_3": {
       "locked": {
-        "lastModified": 1713297878,
-        "narHash": "sha256-hOkzkhLT59wR8VaMbh1ESjtZLbGi+XNaBN6h49SPqEc=",
+        "lastModified": 1716293225,
+        "narHash": "sha256-pU9ViBVE3XYb70xZx+jK6SEVphvt7xMTbm6yDIF4xPs=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "66adc1e47f8784803f2deb6cacd5e07264ec2d5c",
+        "rev": "3eaeaeb6b1e08a016380c279f8846e0bd8808916",
         "type": "github"
       },
       "original": {

flake/overlay.nix

@@ -10,8 +10,9 @@ final: prev: {
     bij;
   inherit (chaosevents.packages.${final.system})
     chaosevents;
-  inherit (harmonia.packages.${final.system})
-    harmonia;
+  harmonia = harmonia.packages.${final.system}.harmonia.override {
+    nixForHarmonia = final.nixVersions.nix_2_21;
+  };
   inherit (ssh-to-age.packages.${final.system})
     ssh-to-age;
 }