INNER CODE UNIT · Go

prepareLayers

tazjin/nixery · builder/builder.go:260

func prepareLayers(ctx context.Context, s *State, image *Image, result *ImageResult) ([]manifest.Entry, error) {
	grouped := layers.GroupLayers(&result.Graph, &s.Pop, LayerBudget)

	var entries []manifest.Entry

	// Splits the layers into those which are already present in
	// the cache, and those that are missing.
	//
	// Missing layers are built and uploaded to the storage
	// bucket.
	for _, l := range grouped {
		lh := l.Hash()

		// While packing store paths, the SHA sum of
		// the uncompressed layer is computed and
		// written to `tarhash`.
		//
		// TODO(tazjin): Refactor this to make the

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