{
  description = "Tynan's nix-darwin system flake";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
    nix-darwin.url = "github:nix-darwin/nix-darwin/master";
    nix-darwin.inputs.nixpkgs.follows = "nixpkgs";
  };

  outputs =
    inputs@{
      self,
      nix-darwin,
      nixpkgs,
      ...
    }:
    let
      configuration =
        { pkgs, ... }: {
          security.pam.services.sudo_local.touchIdAuth = true;
          # List packages installed in system profile. To search by name, run:
          # $ nix-env -qaP | grep wget
          environment.systemPackages = with pkgs; [
            neovim
            slack
            notion-app
            iterm2
            discord
            bitwarden-desktop
            raycast
            net-news-wire
            bitwarden-desktop
            zed-editor
            obsidian

            # nix tools
            nixfmt
          ];

          environment.variables = {
            GIT_AUTHOR_NAME = "Tynan Purdy";
            GIT_AUTHOR_EMAIL = "did:plc:6ayddqghxhciedbaofoxkcbs";
          };

          system = {
            defaults = {
              CustomUserPreferences = {
                "com.apple.symbolichotkeys" = {
                  AppleSymbolicHotKeys = {
                    "64" = {
                      # Disable 'Cmd + Space' for Spotlight Search
                      enabled = false;
                    };
                  };
                };
              };
              dock = {
                # Dock settings
                autohide = true;
                show-recents = false;
                showAppExposeGestureEnabled = true;
                persistent-apps = [
                  "Applications/Zen.app"
                  "Applications/Beeper Desktop.app"
                  "${pkgs.discord}/Applications/Discord.app"
                  "Applications/Fantastical.app"
                ];
              };
              finder = {
                FXPreferredViewStyle = "clmv";
                ShowPathbar = true;
                _FXSortFoldersFirst = true;
              };
              trackpad = {
                TrackpadThreeFingerVertSwipeGesture = 2;
              };
            };
            keyboard = {
              enableKeyMapping = true;
              remapCapsLockToEscape = true;
            };
            primaryUser = "tynanpurdy";
          };

          homebrew = {
            enable = true;
           	onActivation.cleanup = "zap";

            brews = [
            ];

            casks = [
              "todoist-app"
              "markedit"
           	  "qobuz"
           	  "zen"
           	  "stats"
           	  "affinity"
           	  "linearmouse"
           	  "figma"
              "beeper"
              "proton-mail-bridge"
              "monitorcontrol"
              "helium-browser"
              "tailscale-app"
              "orcaslicer"
              "webviewscreensaver"
            ];

            masApps = {
              "Fantastical" = 975937182;
              "Aeronaut" = 6670275450;
              "Crouton" = 1461650987;
              "Barbee" = 1548711022;
              "Copilot Money" = 1447330651;
              "Flighty" = 1358823008;
              "Tripsy" = 1429967544;
              "Parcel" = 375589283;
            };
          };

          environment.shellAliases = {
            drs = "sudo darwin-rebuild switch --flake /etc/nix-darwin";
          };

          # Necessary for using flakes on this system.
          nix.settings.experimental-features = "nix-command flakes";

          # Enable alternative shell support in nix-darwin.
          programs.fish.enable = true;

          # Set Git commit hash for darwin-version.
          system.configurationRevision = self.rev or self.dirtyRev or null;

          # Used for backwards compatibility, please read the changelog before changing.
          # $ darwin-rebuild changelog
          system.stateVersion = 6;

          # The platform the configuration will be used on.
          nixpkgs.hostPlatform = "aarch64-darwin";
          nixpkgs.config.allowUnfree = true;
        };
    in
    {
      # Build darwin flake using:
      # $ darwin-rebuild build --flake .#MacBook-Air
      darwinConfigurations."Kare" = nix-darwin.lib.darwinSystem {
        modules = [
          configuration
        ];
      };
    };
}