drop nixos-unstable

flake.lock

@@ -188,22 +188,6 @@
         "type": "github"
       }
     },
-    "nixpkgs-unstable": {
-      "locked": {
-        "lastModified": 1718714799,
-        "narHash": "sha256-FUZpz9rg3gL8NVPKbqU8ei1VkPLsTIfAJ2fdAf5qjak=",
-        "owner": "nixos",
-        "repo": "nixpkgs",
-        "rev": "c00d587b1a1afbf200b1d8f0b0e4ba9deb1c7f0e",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nixos",
-        "ref": "nixos-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
     "nixpkgs_2": {
       "locked": {
         "lastModified": 1718835956,
@@ -286,7 +270,6 @@
         "kpp": "kpp",
         "nix-index-database": "nix-index-database",
         "nixpkgs": "nixpkgs_2",
-        "nixpkgs-unstable": "nixpkgs-unstable",
         "print-interface": "print-interface",
         "sops-nix": "sops-nix",
         "vscode-server": "vscode-server"