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//go:build !linux
// +build !linux
package cache
import (
"context"
"github.com/containerd/containerd/mount"
"github.com/moby/buildkit/util/compression"
ocispecs "github.com/opencontainers/image-spec/specs-go/v1"
"github.com/pkg/errors"
)
func (sr *immutableRef) tryComputeOverlayBlob(ctx context.Context, lower, upper []mount.Mount, mediaType string, ref string, compressorFunc compression.Compressor) (_ ocispecs.Descriptor, ok bool, err error) {
return ocispecs.Descriptor{}, true, errors.Errorf("overlayfs-based diff computing is unsupported")
}
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