# List packages installed in system profile. To search, run:
  # $ nix search wget
  environment.systemPackages = with pkgs;
  let
    my-packages = python-packages: with python-packages; [
      requests
      virtualenvwrapper
    ];
    python-with-my-packages = python37.withPackages my-packages;
  in
  [
    # X11.
    xorg.xinit
    xorg.xbacklight # used to control the screen backlight

    # Terminal emulators.
    alacritty

    # Python
    python37 python-with-my-packages python37Packages.virtualenv python37Packages.pip