nix: update flake sources to 2ff53fe

flake.lock

@@ -128,11 +128,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1739034224,
-        "narHash": "sha256-Mj/8jDzh1KNmUhWqEeVlW3hO9MZkxqioJGnmR7rivaE=",
+        "lastModified": 1739548217,
+        "narHash": "sha256-rlv64erpr36xdmMDPgf9rhRXBYZ0BZb5nrw2ZPSk1sQ=",
         "owner": "LnL7",
         "repo": "nix-darwin",
-        "rev": "0b6f96a6b9efcfa8d3cc8023008bcbcd1b9bc1a4",
+        "rev": "678b22642abde2ee77ae2218ab41d802f010e5b0",
         "type": "github"
       },
       "original": {
@@ -143,11 +143,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1739020877,
-        "narHash": "sha256-mIvECo/NNdJJ/bXjNqIh8yeoSjVLAuDuTUzAo7dzs8Y=",
+        "lastModified": 1739446958,
+        "narHash": "sha256-+/bYK3DbPxMIvSL4zArkMX0LQvS7rzBKXnDXLfKyRVc=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "a79cfe0ebd24952b580b1cf08cd906354996d547",
+        "rev": "2ff53fe64443980e139eaa286017f53f88336dd0",
         "type": "github"
       },
       "original": {

modules/darwin/nix.nix

@@ -1,9 +1,6 @@
 { config, lib, pkgs, ... }:
 
 {
-  # auto upgrade nix package and the daemon service.
-  services.nix-daemon.enable = true;
-
   # nix auto garbage collection
   nix.gc = {
     automatic = true;