nixpkgs/home/packages/custom/update-ubuntu-system/default.nix

{
  writeShellApplication
  , callPackage
}:

writeShellApplication {
  name = "custom-update-operating-system";

  runtimeInputs = [
    (callPackage ../push-etckeeper { })
  ];

  text = ''
    sudo apt update
    sudo apt list --upgradable
    sudo apt upgrade -V -y
    sudo apt autoremove -y

    custom-push-etckeeper

    sudo fwupdmgr refresh
    sudo fwupdmgr get-updates
    fwupdmgr update -y
  '';
}