Allow substituters to be offline

common/binary-cache.nix

@@ -12,6 +12,13 @@
         "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
         "s0.koi-bebop.ts.net:OjbzD86YjyJZpCp9RWaQKANaflcpKhtzBMNP8I2aPUU="
       ];
+
+      # Allow substituters to be offline
+      # This isn't exactly ideal since it would be best if I could set up a system
+      # so that it is an error if a derivation isn't available for any substituters
+      # and use this flag as intended for deciding if it should build missing
+      # derivations locally. See https://github.com/NixOS/nix/issues/6901
+      fallback = true;
     };
   };
 }

flake.lock

@@ -257,16 +257,16 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1752162966,
-        "narHash": "sha256-3MxxkU8ZXMHXcbFz7UE4M6qnIPTYGcE/7EMqlZNnVDE=",
+        "lastModified": 1752431364,
+        "narHash": "sha256-ciGIXIMq2daX5o4Tn6pnZTd1pf5FICHbqUlHu658G9c=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "10e687235226880ed5e9f33f1ffa71fe60f2638a",
+        "rev": "fb0f0dbfd95f0e19fdeab8e0f18bf0b5cf057b68",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "nixos-25.05",
+        "ref": "release-25.05",
         "repo": "nixpkgs",
         "type": "github"
       }

flake.nix

@@ -1,7 +1,7 @@
 {
   inputs = {
     # nixpkgs
-    nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.05";
+    nixpkgs.url = "github:NixOS/nixpkgs/release-25.05";
 
     # Common Utils Among flake inputs
     systems.url = "github:nix-systems/default";

machines/howl/hardware-configuration.nix

@@ -6,7 +6,7 @@
     nixos-hardware.nixosModules.framework-13-7040-amd
   ];
 
-  boot.kernelPackages = pkgs.linuxPackages_latest;
+  boot.kernelPackages = pkgs.linuxPackages_6_14;
 
   hardware.framework.amd-7040.preventWakeOnAC = true;
   services.fwupd.enable = true;