don't use nixpkgs-staging-next

flake.lock

@@ -417,22 +417,6 @@
         "type": "github"
       }
     },
-    "nixpkgs-staging-next": {
-      "locked": {
-        "lastModified": 1711735267,
-        "narHash": "sha256-Zj44dQ38cqN3NddIE/eA8t36eAKv0SVoMZPK8FF1pQ0=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "1149e1edb772e5f8e87d1a9be91bc34795fdafe8",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "ref": "staging-next",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
     "nixpkgs-unstable": {
       "locked": {
         "lastModified": 1711593151,
@@ -493,7 +477,6 @@
         "nix-wsl": "nix-wsl",
         "nixfiles-assets": "nixfiles-assets",
         "nixpkgs": "nixpkgs_2",
-        "nixpkgs-staging-next": "nixpkgs-staging-next",
         "nixpkgs-unstable": "nixpkgs-unstable",
         "pkg-android-tools": "pkg-android-tools",
         "rust-overlay": "rust-overlay",

flake.nix

@@ -6,8 +6,6 @@
                  # ^^^^^^^^^^^^^ this part is optional
     nixpkgs-unstable.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
 
-    nixpkgs-staging-next.url = "github:NixOS/nixpkgs/staging-next";
-
     # this seems to be a popular way to declare systems
     systems.url = "github:nix-systems/default";
 

system/mitigations.nix

@@ -7,7 +7,7 @@ let
 
   # kernel update
   newKernelPackages = let
-    pkgs-new = import inputs.nixpkgs-staging-next { inherit (pkgs) system; config.allowUnfree = true; };
+    pkgs-new = import inputs.nixpkgs-unstable { inherit (pkgs) system; config.allowUnfree = true; };
   in pkgs-new.linuxPackages_latest;
 in
 {