{ pkgs, ... }: {
  environment.systemPackages = with pkgs; [
    gdb
  ];

  services.xserver = {
    enable = true;
    layout = "cz";
    xkbVariant = "qwerty";

    displayManager.gdm = {
      enable = true;
      debug = true;
    };

    desktopManager.gnome3 = {
      enable = true;
      debug = true;
    };
  };

  services.openssh.enable = true;
  services.flatpak.enable = true;
  services.malcontent.enable = true;

  users.extraUsers.jtojnar = {
    isNormalUser = true;
    uid = 1000;
    extraGroups = [ "wheel" "networkmanager" ];
    password = "a";
    openssh.authorizedKeys.keys = [ "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDYbOlZydfRRCGCT08wdtPcpfSrgxMc6weDx3NcWrnMpVgxnMs3HozzkaS/hbcZUocn7XbCOyaxEd1O8Fuaw4JXpUBcMetpPXkQC+bZHQ3YsZZyzVgCXFPRF88QQj0nR7YVE1AeAifjk3TCODstTxit868V1639/TVIi5y5fC0/VbYG2Lt4AadNH67bRv8YiO3iTsHQoZPKD1nxA7yANHCuw38bGTHRhsxeVD+72ThbsYSZeA9dBrzACpEdnwyXclaoyIOnKdN224tu4+4ytgH/vH/uoUfL8SmzzIDvwZ4Ba2yHhZHs5iwsVjTvLe7jjE6I1u8qY7X8ofnanfNcsmz/ jtojnar@kaiser" ];
  };
  users.extraUsers.kodomo = {
    isNormalUser = true;
    uid = 1001;
    password = "b";
  };

  virtualisation.memorySize = 2048;
  virtualisation.diskSize = 8048;
  virtualisation.qemu.options = [ "-soundhw hda" ];

  nixpkgs = {
    overlays = [
      (final: prev: {
        gnome3 = prev.gnome3.overrideScope'
          (gfinal: gprev: {
            gnome-software = gprev.gnome-software.overrideAttrs (attrs: {
              mesonFlags = (attrs.mesonFlags or []) ++ [
                "-Dmalcontent=true"
              ];
              buildInputs = (attrs.buildInputs or []) ++ [
                prev.malcontent
              ];
            });
          });
      })
    ];
  };
}