| bytes | Package bytes implements functions for the manipulation of byte slices. |
| context | Package context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes. |
| errors | Package errors implements functions to manipulate errors. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| github.com/containerd/typeurl | |
| github.com/gogo/protobuf/proto | Package proto converts data structures to and from the wire format of protocol buffers. |
| github.com/golang/protobuf/jsonpb | Package jsonpb provides functionality to marshal and unmarshal between a protocol buffer message and JSON. |
| github.com/moby/buildkit/solver/pb | |
| github.com/moby/buildkit/util/grpcerrors | |
| github.com/opencontainers/go-digest | Package digest provides a generalized type to opaquely represent message digests and their operations within the registry. |
| github.com/pkg/errors | Package errors provides simple error handling primitives. |
| google.golang.org/grpc/codes | Package codes defines the canonical error codes used by gRPC. |
| io | Package io provides basic interfaces to I/O primitives. |
| math | Package math provides basic constants and mathematical functions. |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |