hosts/common: dns: cleanup hickory-dns file

hosts/common/net/dns/default.nix

@@ -23,7 +23,7 @@
 { config, pkgs, ... }:
 {
   imports = [
-    # ./hickory-dns.nix
+    ./hickory-dns.nix
     ./unbound.nix
   ];
 
@@ -49,6 +49,7 @@
   services.nscd.enable = false;
   # system.nssModules = lib.mkForce [];
   sane.silencedAssertions = [''.*Loading NSS modules from system.nssModules.*requires services.nscd.enable being set to true.*''];
+
   # add NSS modules into their own subdirectory.
   # then i can add just the NSS modules library path to the global LD_LIBRARY_PATH, rather than ALL of /run/current-system/sw/lib.
   # TODO: i'm doing this so as to achieve mdns DNS resolution (avahi). it would be better to just have hickory-dns delegate .local to avahi

hosts/common/net/dns/hickory-dns.nix

@@ -1,6 +1,6 @@
-{ config, lib }:
-{
-  config = lib.mkMerge [
+{ config, lib, ... }:
+lib.mkIf false  #< XXX(2024-10-xx): hickory-dns recursive resolution is too immature; switched to `unbound`
+(lib.mkMerge [
  {
    sane.services.hickory-dns.enable = lib.mkDefault config.sane.services.hickory-dns.asSystemResolver;
    # sane.services.hickory-dns.asSystemResolver = lib.mkDefault true;
@@ -28,5 +28,4 @@
      "127.0.0.53"
    ];
  })
-  ];
-}
+])