{
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
    flake-utils = {
      url = "github:numtide/flake-utils";
    };
  };
  outputs =
    {
      flake-utils,
      nixpkgs,
      ...
    }:
    flake-utils.lib.eachDefaultSystem (
      system:
      let
        pkgs = import nixpkgs {
          localSystem = { inherit system; };
        };
      in
      {
        formatter = pkgs.alejandra;
        devShells.default = pkgs.mkShell {
          packages = with pkgs; [
            clang-tools

            gcc
            bear
            gnumake
          ];
        };
      }
    );
  nixConfig = {
    keepOutputs = true;
  };
}