{ pkgs ? import <nixpkgs> {} 
}: {
  default = pkgs.mkShell {
    NIX_CONFIG = "extra-experimental-features = nix-command flakes repl-flake";
    nativeBuildInputs = builtins.attrValues {
      inherit (pkgs)
        # Required for pre-commit hook 'nixpkgs-fmt' only on Darwin
        # REF: <https://discourse.nixos.org/t/nix-shell-rust-hello-world-ld-linkage-issue/17381/4>
        libiconv
        
        nix
        home-manager
        git
        just
        pre-commit
        
        age
        ssh-to-age
        sops;
    };
  };
}