1 files changed, 41 insertions, 0 deletions
diff --git a/modules/nixos/traits/resolved.nix b/modules/nixos/traits/resolved.nix
new file mode 100644
index 0000000..d6501c9
--- /dev/null
+++ b/modules/nixos/traits/resolved.nix
@@ -0,0 +1,41 @@
+{
+  config,
+  lib,
+  ...
+}:
+let
+  cfg = config.traits.resolved;
+in
+{
+  options.traits.resolved = {
+    enable = lib.mkEnableOption "systemd-resolved as the DNS resolver" // {
+      default = true;
+    };
+
+    networkManagerIntegration = lib.mkEnableOption "integration with network-manager" // {
+      default = config.networking.networkmanager.enable;
+      defaultText = "config.networking.networkmanager.enable";
+    };
+  };
+
+  config = lib.mkIf cfg.enable (
+    lib.mkMerge [
+      {
+        networking.nameservers = [
+          "1.1.1.1#one.one.one.one"
+          "1.0.0.1#one.one.one.one"
+        ];
+
+        services.resolved = {
+          enable = true;
+          dnssec = "allow-downgrade";
+          dnsovertls = "true";
+        };
+      }
+
+      (lib.mkIf cfg.networkManagerIntegration {
+        networking.networkmanager.dns = "systemd-resolved";
+      })
+    ]
+  );
+}