{
  description = "Starter configuration for macOS with nix-darwin";

  inputs = {
    nixpkgsAarch64 = {
      url = "github:nixos/nixpkgs/nixpkgs-unstable";
    };

    nixpkgsX86 = {
      url = "github:nixos/nixpkgs//nixpkgs-26.05-darwin";
    };

    homeManagerAarch64 = {
      url = "github:nix-community/home-manager";
      inputs.nixpkgs.follows = "nixpkgsAarch64";
    };

    homeManagerX86 = {
      url = "github:nix-community/home-manager/release-26.05";
      inputs.nixpkgs.follows = "nixpkgsX86";
    };

    nixd = {
      url = "github:nix-community/nixd";
    };

    darwinAarch64 = {
      url = "github:nix-darwin/nix-darwin";
      inputs.nixpkgs.follows = "nixpkgsAarch64";
    };

    darwinX86 = {
      url = "github:nix-darwin/nix-darwin/nix-darwin-26.05";
      inputs.nixpkgs.follows = "nixpkgsX86";
    };

    brew-src = {
      url = "github:Homebrew/brew/main";
      flake = false;
    };

    nix-homebrew = {
      url = "github:zhaofengli-wip/nix-homebrew";
      inputs.brew-src.follows = "brew-src";
    };

    homebrew-core = {
      url = "github:homebrew/homebrew-core";
      flake = false;
    };

    homebrew-cask = {
      url = "github:homebrew/homebrew-cask";
      flake = false;
    };

    sops-nix = {
      url = "github:Mic92/sops-nix";
      inputs.nixpkgs.follows = "nixpkgsAarch64";
    };

    nix-vscode-extensions = {
      url = "github:nix-community/nix-vscode-extensions";
    };

    catppuccin = {
      url = "github:catppuccin/nix";
    };

    llm-agents = {
      url = "github:numtide/llm-agents.nix";
    };

    # mac-app-util doesn't work with OCLP installed on X86
    # mac-app-util = {
    #   url = "github:hraban/mac-app-util";
    # };
  };

  outputs =
    {
      self,
      darwinAarch64,
      darwinX86,
      nix-homebrew,
      homebrew-core,
      homebrew-cask,
      homeManagerAarch64,
      homeManagerX86,
      nixpkgsAarch64,
      nixpkgsX86,
      nixd,
      sops-nix,
      nix-vscode-extensions,
      catppuccin,
      llm-agents,
      ...
    }@inputs:
    let
      user = "olaf";
      lib = nixpkgsAarch64.lib;
      darwinSystems = [
        "aarch64-darwin"
        "x86_64-darwin"
      ];

      perSystem = {
        aarch64-darwin = {
          nixpkgs = nixpkgsAarch64;
          darwin = darwinAarch64;
          home-manager = homeManagerAarch64;
          pkgs = nixpkgsAarch64.legacyPackages.aarch64-darwin;
        };
        x86_64-darwin = {
          nixpkgs = nixpkgsX86;
          darwin = darwinX86;
          home-manager = homeManagerX86;
          pkgs = nixpkgsX86.legacyPackages.x86_64-darwin;
        };
      };

      forAllSystems = f: lib.genAttrs darwinSystems f;

      devShell =
        system:
        let
          pkgs = perSystem.${system}.pkgs;
        in
        {
          default =
            with pkgs;
            mkShell {
              nativeBuildInputs = with pkgs; [
                bashInteractive
                git
                pkgs.nixd
              ];

              packages = with pkgs; [
                platformio-core
                (writeShellScriptBin "python" ''
                  if [ "$1" = "-m" ] && [ "$2" = "platformio" ]; then
                    shift 2
                    exec ${platformio-core}/bin/platformio "$@"
                  fi
                  exec ${python3}/bin/python3 "$@"
                '')
                openocd
                avrdude
              ];

              shellHook = ''
                export EDITOR=vim
                export PLATFORMIO_CORE_DIR="$PWD/.platformio"
              '';

            };
        };

      mkApp =
        scriptName: system:
        let
          pkgs = perSystem.${system}.pkgs;
        in
        {
          type = "app";
          program = "${
            (pkgs.writeScriptBin scriptName ''
            #!/usr/bin/env bash
            PATH=${pkgs.git}/bin:$PATH
            echo "Running ${scriptName} for ${system}"
            sudo chmod +x ${self}/apps/${system}/${scriptName}
            exec ${self}/apps/${system}/${scriptName}
          '')
          }/bin/${scriptName}";
        };

      mkDarwinApps = system: {
        "apply" = mkApp "apply" system;
        "build" = mkApp "build" system;
        "build-switch" = mkApp "build-switch" system;
        "rollback" = mkApp "rollback" system;
      };
    in
    {
      devShells = forAllSystems devShell;
      apps = lib.genAttrs darwinSystems mkDarwinApps;

      darwinConfigurations = lib.genAttrs darwinSystems (
        system:
        let
          systemConfig = perSystem.${system};
        in
        systemConfig.darwin.lib.darwinSystem {
          inherit system;
          specialArgs = inputs // {
            inherit system;
            nixpkgs = systemConfig.nixpkgs;
            darwin = systemConfig.darwin;
            home-manager = systemConfig.home-manager;
          };
          modules = [
            systemConfig.home-manager.darwinModules.home-manager
            nix-homebrew.darwinModules.nix-homebrew
            {
              nix-homebrew = {
                inherit user;
                enable = true;
                taps = {
                  "homebrew/homebrew-core" = homebrew-core;
                  "homebrew/homebrew-cask" = homebrew-cask;
                };
                mutableTaps = false;
                autoMigrate = true;
              };

              home-manager.sharedModules =
                lib.optionals (system != "x86_64-darwin") [
                  catppuccin.homeModules.catppuccin
                ];
            }

            ./hosts/darwin
          ];
        }
      );
    };
}