{
  config,
  pkgs,
  lib,
  unstable,
  inputs,
  nix-your-shell,
  ...
}:

{

  nix.settings.experimental-features = [
    "nix-command"
    "flakes"
  ];

  # Allow unfree packages
  nixpkgs.config.allowUnfree = true;

  # Set your time zone.
  time.timeZone = "Australia/Melbourne";

  fonts = {
    fontDir.enable = true;
    enableGhostscriptFonts = true;
    packages = [ ] ++ builtins.filter lib.attrsets.isDerivation (builtins.attrValues pkgs.nerd-fonts);
  };

  environment.systemPackages =
    with pkgs;
    with unstable;
    [
      waypipe

      # === nix related ===
      comma
      nh
      # === nix related ===

      # nix-your-shell

    ];

  programs.firefox.enable = true;

  programs.gnupg.agent = {
    enable = true;
    enableSSHSupport = true;
  };

  programs.fish = {
    enable = true;
    # interactiveShellInit = ''
    #   nix-your-shell fish | source
    # '';
  };

  programs.bash = {
    interactiveShellInit = ''
      if [[ $(${pkgs.procps}/bin/ps --no-header --pid=$PPID --format=comm) != "fish" && -z ''${BASH_EXECUTION_STRING} ]]
      then
        shopt -q login_shell && LOGIN_OPTION='--login' || LOGIN_OPTION=""
        exec ${pkgs.fish}/bin/fish $LOGIN_OPTION
      fi
    '';
  };

  boot.binfmt.registrations.appimage = {
    wrapInterpreterInShell = false;
    interpreter = "${pkgs.appimage-run}/bin/appimage-run";
    recognitionType = "magic";
    offset = 0;
    mask = ''\xff\xff\xff\xff\x00\x00\x00\x00\xff\xff\xff'';
    magicOrExtension = ''\x7fELF....AI\x02'';
  };

}