chore: update flake.lock

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/c0f3d81a7ddbc2b1332be0d8481a672b4f6004d6?narHash=sha256-MOH58F4AIbCkh6qlQcwMycyk5SWvsqnS/TCfnqDlpj4%3D' (2026-02-27)
  → 'github:NixOS/nixpkgs/e38213b91d3786389a446dfce4ff5a8aaf6012f2?narHash=sha256-xWzaTvmmACR/SRWtABgI/Z97lcqwJAeoSd5QW1KdK1s%3D' (2026-03-06)

Author: github-actions[bot]

flake.lock

@@ -9,7 +9,14 @@
     let
       inherit (nixpkgs) lib;
 
-      eachSystem = f: lib.genAttrs systems (system: f nixpkgs.legacyPackages.${system});
+      importNixpkgs =
+        system:
+        import nixpkgs {
+          inherit system;
+          config.allowDeprecatedx86_64Darwin = true;
+        };
+
+      eachSystem = f: lib.genAttrs systems (system: f (importNixpkgs system));
       systems = [
         "x86_64-linux"
         "aarch64-linux"