boot.extraModulePackages = [ ideapad-laptop-tb ];
    boot.blacklistedKernelModules = [ "ideapad-laptop" ];
    environment.etc."systemd/system-sleep/sleepissue.sh".source = pkgs.writeShellScript "sleepissue.sh" ''
case $1/$2 in
    pre/*)
    # commands to be executed before suspend, hibernate, etc. goes below
    echo "before power down"
    /run/current-system/sw/bin/modprobe -r ideapad_laptop_tb
    ;;
    post/*)
    # commands to be executed on wake, resume, etc. goes below
    echo "after power up"
    /run/current-system/sw/bin/modprobe ideapad_laptop_tb
    ;;
esac
'';

#define IDEAPAD_EC_TIMEOUT 50 /* in ms */