nix: update and fix nix files for new build

flake.lock

@@ -2,16 +2,16 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1739357830,
-        "narHash": "sha256-9xim3nJJUFbVbJCz48UP4fGRStVW5nv4VdbimbKxJ3I=",
+        "lastModified": 1750005367,
+        "narHash": "sha256-h/aac1dGLhS3qpaD2aZt25NdKY7b+JT0ZIP2WuGsJMU=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "0ff09db9d034a04acd4e8908820ba0b410d7a33a",
+        "rev": "6c64dabd3aa85e0c02ef1cdcb6e1213de64baee3",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "nixos-24.11",
+        "ref": "nixos-25.05",
         "repo": "nixpkgs",
         "type": "github"
       }

flake.nix

@@ -1,6 +1,6 @@
 {
   inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs/nixos-24.11";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.05";
     utils.url = "github:numtide/flake-utils";
   };
   outputs = { self, nixpkgs, utils }:

shell.nix

@@ -3,7 +3,7 @@ let
     "https://github.com/oxalica/rust-overlay/archive/master.tar.gz");
 
   pkgs = import <nixpkgs> { overlays = [ oxalica_overlay ]; };
-  rust_channel = pkgs.rust-bin.fromRustupToolchainFile ./rust-toolchain;
+  rust_channel = pkgs.rust-bin.fromRustupToolchainFile ./rust-toolchain.toml;
   #rust_channel = pkgs.rust-bin.stable.latest.default;
 in
 pkgs.mkShell {