{
  description = "small utilities";

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
  };

  outputs =
    { nixpkgs, ... }:
    let
      inherit (nixpkgs.lib) genAttrs;
      forAllSystems =
        f:
        genAttrs [
          "x86_64-linux"
          "x86_64-darwin"
          "aarch64-linux"
          "aarch64-darwin"
        ] (system: f nixpkgs.legacyPackages.${system});
    in
    {
      devShells = forAllSystems (pkgs: {
        default = pkgs.mkShell {
          packages = with pkgs; [
            go
            nim
          ];
        };
      });
      formatter = forAllSystems (pkgs: pkgs.nixfmt-rfc-style);
    };
}