Add nixpkgs-next url

flake.lock

@@ -69,10 +69,27 @@
         "type": "github"
       }
     },
+    "nixpkgs-next": {
+      "locked": {
+        "lastModified": 1685566663,
+        "narHash": "sha256-btHN1czJ6rzteeCuE/PNrdssqYD2nIA4w48miQAFloM=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "4ecab3273592f27479a583fb6d975d4aba3486fe",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "23.05",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "root": {
       "inputs": {
         "nixos-wsl": "nixos-wsl",
-        "nixpkgs": "nixpkgs"
+        "nixpkgs": "nixpkgs",
+        "nixpkgs-next": "nixpkgs-next"
       }
     }
   },

flake.nix

@@ -1,11 +1,17 @@
 {
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/22.11";
+    nixpkgs-next.url = "github:NixOS/nixpkgs/23.05";
     nixos-wsl.url = "github:nix-community/NixOS-WSL";
     nixos-wsl.inputs.nixpkgs.follows = "nixpkgs";
   };
 
-  outputs = { self, nixpkgs, nixos-wsl }: {
+  outputs = {
+    self,
+    nixpkgs,
+    nixpkgs-next,
+    nixos-wsl
+  }: {
     nixosConfigurations = {
       catacomb = nixpkgs.lib.nixosSystem {
         system = "aarch64-linux";