{
  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; }; in
        {
          default = pkgs.mkShell {
            packages = with pkgs; [
              /* (fenix.packages.${system}.complete.withComponents [
                "cargo"
                "clippy"
                "rust-src"
                "rustc"
                "rustfmt"
                "rust-analyzer"
                "miri"
              ]) */
              gdb
              valgrind
              gemini-cli
            ];
          };
        }
      );
    };
}