update flake to nixos 25.05

flake.lock

@@ -2,16 +2,16 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1739357830,
-        "narHash": "sha256-9xim3nJJUFbVbJCz48UP4fGRStVW5nv4VdbimbKxJ3I=",
+        "lastModified": 1758791193,
+        "narHash": "sha256-F8WmEwFoHsnix7rt290R0rFXNJiMbClMZyIC/e+HYf0=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "0ff09db9d034a04acd4e8908820ba0b410d7a33a",
+        "rev": "25e53aa156d47bad5082ff7618f5feb1f5e02d01",
         "type": "github"
       },
       "original": {
         "owner": "nixos",
-        "ref": "nixos-24.11",
+        "ref": "nixos-25.05",
         "repo": "nixpkgs",
         "type": "github"
       }

flake.nix

@@ -2,11 +2,11 @@
   description = "Flake for the servicepoint library.";
 
   inputs = {
-    nixpkgs.url = "github:nixos/nixpkgs/nixos-24.11";
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-25.05";
   };
 
   outputs =
-    inputs@{
+    {
       self,
       nixpkgs,
     }:
@@ -32,7 +32,7 @@
       devShells = forAllSystems (
         { pkgs, system }:
         {
-          default = pkgs.mkShell rec {
+          default = pkgs.mkShell {
             packages = with pkgs; [
               (pkgs.symlinkJoin
               {