{
  nixConfig = {
    extra-substituters = [
      "https://cache.garnix.io"
    ];
    extra-trusted-public-keys = [
      "cache.garnix.io:CTFPyKSLcx5RMJKfLo5EEPUObbA78b0YQ2DTCJXqr9g="
    ];
  };
  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
    fenix.url = "github:nix-community/fenix";
    fenix.inputs.nixpkgs.follows = "nixpkgs";
  };
  outputs = { nixpkgs, fenix, ... }:
    let
      forAllSystems = nixpkgs.lib.genAttrs nixpkgs.lib.systems.flakeExposed;
    in
    {
      devShells = forAllSystems (system:
        let pkgs = import nixpkgs { inherit system; config.allowUnfree = true; }; in
        {
          default = pkgs.mkShell {
            packages = with pkgs; [
              (fenix.packages.${system}.stable.withComponents [
                "cargo"
                "clippy"
                "rust-src"
                "rustc"
                "rustfmt"
                "rust-analyzer"
              ])
              lldb
              valgrind
              claude-code
            ];
          };
        }
      );
    };
}