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trait ValidControl<F: EventHandler> {
    type WrappedHandler: EventHandler;

    fn wrap(handler: F) -> Self::WrappedHandler;
}

enum Disabled {}

impl<F: EventHandler> ValidControl<F> for Disabled {
    type WrappedHandler = F;

    fn wrap(handler: F) -> Self::WrappedHandler {
        handler
    }
}

struct Enabled<T> {
    _marker: PhantomData<T>,
}

impl<F, T: std::fmt::Debug> ValidControl<F> for Enabled<oneshot::Sender<T>>
where
    F: EventHandler<Token = Interrupted<(oneshot::Sender<T>, Claim)>>,
    F::Handle: util::signal::Interruptable<Signal = nix::sys::signal::Signal> + std::fmt::Debug,
{
    type WrappedHandler =
        NoPrelaunchControl<LockControl<ControlToInterrupt<F, nix::sys::signal::Signal>>>;

    fn wrap(handler: F) -> Self::WrappedHandler {
        NoPrelaunchControl::new(LockControl::new(ControlToInterrupt::new(
            handler,
            <F::Handle as Interruptable>::Signal::sigquit(),
        )))
    }
}