// Set this option on the provided Options
	Set(*Options)
}

// OptionFunc is a function-based Option.
type OptionFunc func(*Options)

// Set just invokes this function to update the Options.
func (f OptionFunc) Set(opts *Options) {
	f(opts)
}

// NoCleanup is an Option that disables config cleanup.
var NoCleanup Option = OptionFunc(func(opts *Options) {
	opts.Cleanup = cleanup.None
})