feat: upgrade nixos master cluster to nixpkgs 25.05

nixos/master/configuration.nix

@@ -8,11 +8,10 @@
   imports = [ ./hardware-configuration.nix ];
 
   nix = {
-    package = pkgs.nixFlakes;
-    settings.require-sigs = false;
-    extraOptions = ''
-      experimental-features = nix-command flakes
-    '';
+    settings = {
+      require-sigs = false;
+      experimental-features = [ "nix-command" "flakes" ];
+    };
   };
 
   # Use the systemd-boot EFI boot loader.

nixos/master/flake.lock

@@ -7,11 +7,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1724031427,
-        "narHash": "sha256-o1HdAf+7IGv9M13R3c+zc/sJ0QgeEnhsvHBcodI4UpM=",
+        "lastModified": 1758287904,
+        "narHash": "sha256-IGmaEf3Do8o5Cwp1kXBN1wQmZwQN3NLfq5t4nHtVtcU=",
         "owner": "nix-community",
         "repo": "disko",
-        "rev": "4e719b38fa7c85f4f65d0308ca7084c91e7bdd6d",
+        "rev": "67ff9807dd148e704baadbd4fd783b54282ca627",
         "type": "github"
       },
       "original": {
@@ -22,16 +22,16 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1723938990,
-        "narHash": "sha256-9tUadhnZQbWIiYVXH8ncfGXGvkNq3Hag4RCBEMUk7MI=",
+        "lastModified": 1759994382,
+        "narHash": "sha256-wSK+3UkalDZRVHGCRikZ//CyZUJWDJkBDTQX1+G77Ow=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "c42fcfbdfeae23e68fc520f9182dde9f38ad1890",
+        "rev": "5da4a26309e796daa7ffca72df93dbe53b8164c7",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "nixos-24.05",
+        "ref": "nixos-25.05",
         "repo": "nixpkgs",
         "type": "github"
       }

nixos/master/flake.nix

@@ -2,7 +2,7 @@
   description = "Homelab NixOS Flake";
 
   inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs/nixos-24.05";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.05";
     # Disko
     disko = {
       url = "github:nix-community/disko";