{
  inputs.nixpkgs.url = "github:nixos/nixpkgs";
  outputs = {
    self,
    nixpkgs,
    systems,
  }: let
    eachSystem = f:
      nixpkgs.lib.genAttrs (import systems) (sys:
        f {
          inherit sys;
          pkgs = nixpkgs.legacyPackages.${sys};
        });
  in {
    devShells = eachSystem ({
      sys,
      pkgs,
    }: {
      default = pkgs.mkShell {
        packages = with pkgs; [
          qmk
          clang
          clang-tools
          dos2unix
        ];
        shellHook = ''
          export QMK_HOME=$PWD/qmk_firmware
        '';
      };
    });
  };
}