Migrate to newer options and packages

Author: jmbaur

dns.nix

@@ -50,11 +50,11 @@ in
   config = lib.mkIf cfg.enable {
     services.resolved = {
       enable = true;
-      fallbackDns = [ ];
-      extraConfig = ''
-        DNS=[::1]:53
-        DNSStubListener=no
-      '';
+      settings.Resolve = {
+        DNS = [ "[::1]:53" ];
+        DNSStubListener = false;
+        FallbackDNS = lib.mkForce [ ];
+      };
     };
 
     services.knot-resolver = {

flake.lock

@@ -21,7 +21,7 @@
         lib = pkgs.callPackage ./lib-tests.nix { };
       });
       nixosModules.default = ./module.nix;
-      formatter = forAllSystems (pkgs: pkgs.nixfmt-rfc-style);
+      formatter = forAllSystems (pkgs: pkgs.nixfmt);
       devShells = forAllSystems (pkgs: {
         default = pkgs.mkShell {
           packages = with pkgs; [
@@ -34,7 +34,7 @@
             (inputs.git-hooks.lib.${pkgs.stdenv.hostPlatform.system}.run {
               src = ./.;
               hooks.deadnix.enable = true;
-              hooks.nixfmt-rfc-style.enable = true;
+              hooks.nixfmt.enable = true;
             })
             shellHook
             ;

flake.nix

@@ -18,7 +18,7 @@ testers.nixosTest {
       virtualisation.vlans = [ 1 ];
 
       # don't use defaults that require internet connectivity
-      services.resolved.fallbackDns = [ ];
+      services.resolved.settings.Resolve.FallbackDns = lib.mkForce [ ];
 
       networking = {
         useNetworkd = true;