config

type LayerBuilds struct {
	// Workers is how many of one export's layers build at once; 0 or 1
	// builds them one at a time, in chain order.
	Workers int
	// Gate, when set, bounds the builds of every export that shares it, one
	// unit per build. It is held only while a blob is built, not while a
	// layer's blob is reused or its export lock is awaited.
	Gate *semaphore.Weighted
}

type RefConfig struct {
	Compression            compression.Config
	PreferNonDistributable bool
	// Builds bounds how an export builds the blobs its layers lack. The zero
	// value builds them one at a time.
	Builds LayerBuilds
}