vendor: add buildkit

Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>

vendor/github.com/moby/buildkit/util/apicaps/caps.go

@@ -0,0 +1,162 @@
+package apicaps
+
+import (
+	"fmt"
+	"sort"
+	"strings"
+
+	pb "github.com/moby/buildkit/util/apicaps/pb"
+	"github.com/pkg/errors"
+)
+
+type PBCap = pb.APICap
+
+// ExportedProduct is the name of the product using this package.
+// Users vendoring this library may override it to provide better versioning hints
+// for their users (or set it with a flag to buildkitd).
+var ExportedProduct string
+
+// CapStatus defines the stability properties of a capability
+type CapStatus int
+
+const (
+	// CapStatusStable refers to a capability that should never be changed in
+	// backwards incompatible manner unless there is a serious security issue.
+	CapStatusStable CapStatus = iota
+	// CapStatusExperimental refers to a capability that may be removed in the future.
+	// If incompatible changes are made the previous ID is disabled and new is added.
+	CapStatusExperimental
+	// CapStatusPrerelease is same as CapStatusExperimental that can be used for new
+	// features before they move to stable.
+	CapStatusPrerelease
+)
+
+// CapID is type for capability identifier
+type CapID string
+
+// Cap describes an API feature
+type Cap struct {
+	ID                  CapID
+	Name                string // readable name, may contain spaces but keep in one sentence
+	Status              CapStatus
+	Enabled             bool
+	Deprecated          bool
+	SupportedHint       map[string]string
+	DisabledReason      string
+	DisabledReasonMsg   string
+	DisabledAlternative string
+}
+
+// CapList is a collection of capability definitions
+type CapList struct {
+	m map[CapID]Cap
+}
+
+// Init initializes definition for a new capability.
+// Not safe to be called concurrently with other methods.
+func (l *CapList) Init(cc ...Cap) {
+	if l.m == nil {
+		l.m = make(map[CapID]Cap, len(cc))
+	}
+	for _, c := range cc {
+		l.m[c.ID] = c
+	}
+}
+
+// All reports the configuration of all known capabilities
+func (l *CapList) All() []pb.APICap {
+	out := make([]pb.APICap, 0, len(l.m))
+	for _, c := range l.m {
+		out = append(out, pb.APICap{
+			ID:                  string(c.ID),
+			Enabled:             c.Enabled,
+			Deprecated:          c.Deprecated,
+			DisabledReason:      c.DisabledReason,
+			DisabledReasonMsg:   c.DisabledReasonMsg,
+			DisabledAlternative: c.DisabledAlternative,
+		})
+	}
+	sort.Slice(out, func(i, j int) bool {
+		return out[i].ID < out[j].ID
+	})
+	return out
+}
+
+// CapSet returns a CapSet for an capability configuration
+func (l *CapList) CapSet(caps []pb.APICap) CapSet {
+	m := make(map[string]*pb.APICap, len(caps))
+	for _, c := range caps {
+		if c.ID != "" {
+			c := c // capture loop iterator
+			m[c.ID] = &c
+		}
+	}
+	return CapSet{
+		list: l,
+		set:  m,
+	}
+}
+
+// CapSet is a configuration for detecting supported capabilities
+type CapSet struct {
+	list *CapList
+	set  map[string]*pb.APICap
+}
+
+// Supports returns an error if capability is not supported
+func (s *CapSet) Supports(id CapID) error {
+	err := &CapError{ID: id}
+	c, ok := s.list.m[id]
+	if !ok {
+		return errors.WithStack(err)
+	}
+	err.Definition = &c
+	state, ok := s.set[string(id)]
+	if !ok {
+		return errors.WithStack(err)
+	}
+	err.State = state
+	if !state.Enabled {
+		return errors.WithStack(err)
+	}
+	return nil
+}
+
+// CapError is an error for unsupported capability
+type CapError struct {
+	ID         CapID
+	Definition *Cap
+	State      *pb.APICap
+}
+
+func (e CapError) Error() string {
+	if e.Definition == nil {
+		return fmt.Sprintf("unknown API capability %s", e.ID)
+	}
+	typ := ""
+	if e.Definition.Status == CapStatusExperimental {
+		typ = "experimental "
+	}
+	if e.Definition.Status == CapStatusPrerelease {
+		typ = "prerelease "
+	}
+	name := ""
+	if e.Definition.Name != "" {
+		name = "(" + e.Definition.Name + ")"
+	}
+	b := &strings.Builder{}
+	fmt.Fprintf(b, "requested %sfeature %s %s", typ, e.ID, name)
+	if e.State == nil {
+		fmt.Fprint(b, " is not supported by build server")
+		if hint, ok := e.Definition.SupportedHint[ExportedProduct]; ok {
+			fmt.Fprintf(b, " (added in %s)", hint)
+		}
+		fmt.Fprintf(b, ", please update %s", ExportedProduct)
+	} else {
+		fmt.Fprint(b, " has been disabled on the build server")
+		if e.State.DisabledReasonMsg != "" {
+			fmt.Fprintf(b, ": %s", e.State.DisabledReasonMsg)
+		}
+	}
+	return b.String()
+}

vendor/github.com/moby/buildkit/util/apicaps/pb/caps.pb.go

@@ -0,0 +1,567 @@
+// Code generated by protoc-gen-gogo. DO NOT EDIT.
+// source: caps.proto
+
+package moby_buildkit_v1_apicaps
+
+import proto "github.com/gogo/protobuf/proto"
+import fmt "fmt"
+import math "math"
+import _ "github.com/gogo/protobuf/gogoproto"
+
+import io "io"
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.GoGoProtoPackageIsVersion2 // please upgrade the proto package
+
+// APICap defines a capability supported by the service
+type APICap struct {
+	ID                   string   `protobuf:"bytes,1,opt,name=ID,proto3" json:"ID,omitempty"`
+	Enabled              bool     `protobuf:"varint,2,opt,name=Enabled,proto3" json:"Enabled,omitempty"`
+	Deprecated           bool     `protobuf:"varint,3,opt,name=Deprecated,proto3" json:"Deprecated,omitempty"`
+	DisabledReason       string   `protobuf:"bytes,4,opt,name=DisabledReason,proto3" json:"DisabledReason,omitempty"`
+	DisabledReasonMsg    string   `protobuf:"bytes,5,opt,name=DisabledReasonMsg,proto3" json:"DisabledReasonMsg,omitempty"`
+	DisabledAlternative  string   `protobuf:"bytes,6,opt,name=DisabledAlternative,proto3" json:"DisabledAlternative,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *APICap) Reset()         { *m = APICap{} }
+func (m *APICap) String() string { return proto.CompactTextString(m) }
+func (*APICap) ProtoMessage()    {}
+func (*APICap) Descriptor() ([]byte, []int) {
+	return fileDescriptor_caps_04e1bcd232e9a565, []int{0}
+}
+func (m *APICap) XXX_Unmarshal(b []byte) error {
+	return m.Unmarshal(b)
+}
+func (m *APICap) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	if deterministic {
+		return xxx_messageInfo_APICap.Marshal(b, m, deterministic)
+	} else {
+		b = b[:cap(b)]
+		n, err := m.MarshalTo(b)
+		if err != nil {
+			return nil, err
+		}
+		return b[:n], nil
+	}
+}
+func (dst *APICap) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_APICap.Merge(dst, src)
+}
+func (m *APICap) XXX_Size() int {
+	return m.Size()
+}
+func (m *APICap) XXX_DiscardUnknown() {
+	xxx_messageInfo_APICap.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_APICap proto.InternalMessageInfo
+
+func (m *APICap) GetID() string {
+	if m != nil {
+		return m.ID
+	}
+	return ""
+}
+
+func (m *APICap) GetEnabled() bool {
+	if m != nil {
+		return m.Enabled
+	}
+	return false
+}
+
+func (m *APICap) GetDeprecated() bool {
+	if m != nil {
+		return m.Deprecated
+	}
+	return false
+}
+
+func (m *APICap) GetDisabledReason() string {
+	if m != nil {
+		return m.DisabledReason
+	}
+	return ""
+}
+
+func (m *APICap) GetDisabledReasonMsg() string {
+	if m != nil {
+		return m.DisabledReasonMsg
+	}
+	return ""
+}
+
+func (m *APICap) GetDisabledAlternative() string {
+	if m != nil {
+		return m.DisabledAlternative
+	}
+	return ""
+}
+
+func init() {
+	proto.RegisterType((*APICap)(nil), "moby.buildkit.v1.apicaps.APICap")
+}
+func (m *APICap) Marshal() (dAtA []byte, err error) {
+	size := m.Size()
+	dAtA = make([]byte, size)
+	n, err := m.MarshalTo(dAtA)
+	if err != nil {
+		return nil, err
+	}
+	return dAtA[:n], nil
+}
+
+func (m *APICap) MarshalTo(dAtA []byte) (int, error) {
+	var i int
+	_ = i
+	var l int
+	_ = l
+	if len(m.ID) > 0 {
+		dAtA[i] = 0xa
+		i++
+		i = encodeVarintCaps(dAtA, i, uint64(len(m.ID)))
+		i += copy(dAtA[i:], m.ID)
+	}
+	if m.Enabled {
+		dAtA[i] = 0x10
+		i++
+		if m.Enabled {
+			dAtA[i] = 1
+		} else {
+			dAtA[i] = 0
+		}
+		i++
+	}
+	if m.Deprecated {
+		dAtA[i] = 0x18
+		i++
+		if m.Deprecated {
+			dAtA[i] = 1
+		} else {
+			dAtA[i] = 0
+		}
+		i++
+	}
+	if len(m.DisabledReason) > 0 {
+		dAtA[i] = 0x22
+		i++
+		i = encodeVarintCaps(dAtA, i, uint64(len(m.DisabledReason)))
+		i += copy(dAtA[i:], m.DisabledReason)
+	}
+	if len(m.DisabledReasonMsg) > 0 {
+		dAtA[i] = 0x2a
+		i++
+		i = encodeVarintCaps(dAtA, i, uint64(len(m.DisabledReasonMsg)))
+		i += copy(dAtA[i:], m.DisabledReasonMsg)
+	}
+	if len(m.DisabledAlternative) > 0 {
+		dAtA[i] = 0x32
+		i++
+		i = encodeVarintCaps(dAtA, i, uint64(len(m.DisabledAlternative)))
+		i += copy(dAtA[i:], m.DisabledAlternative)
+	}
+	if m.XXX_unrecognized != nil {
+		i += copy(dAtA[i:], m.XXX_unrecognized)
+	}
+	return i, nil
+}
+
+func encodeVarintCaps(dAtA []byte, offset int, v uint64) int {
+	for v >= 1<<7 {
+		dAtA[offset] = uint8(v&0x7f | 0x80)
+		v >>= 7
+		offset++
+	}
+	dAtA[offset] = uint8(v)
+	return offset + 1
+}
+func (m *APICap) Size() (n int) {
+	if m == nil {
+		return 0
+	}
+	var l int
+	_ = l
+	l = len(m.ID)
+	if l > 0 {
+		n += 1 + l + sovCaps(uint64(l))
+	}
+	if m.Enabled {
+		n += 2
+	}
+	if m.Deprecated {
+		n += 2
+	}
+	l = len(m.DisabledReason)
+	if l > 0 {
+		n += 1 + l + sovCaps(uint64(l))
+	}
+	l = len(m.DisabledReasonMsg)
+	if l > 0 {
+		n += 1 + l + sovCaps(uint64(l))
+	}
+	l = len(m.DisabledAlternative)
+	if l > 0 {
+		n += 1 + l + sovCaps(uint64(l))
+	}
+	if m.XXX_unrecognized != nil {
+		n += len(m.XXX_unrecognized)
+	}
+	return n
+}
+
+func sovCaps(x uint64) (n int) {
+	for {
+		n++
+		x >>= 7
+		if x == 0 {
+			break
+		}
+	}
+	return n
+}
+func sozCaps(x uint64) (n int) {
+	return sovCaps(uint64((x << 1) ^ uint64((int64(x) >> 63))))
+}
+func (m *APICap) Unmarshal(dAtA []byte) error {
+	l := len(dAtA)
+	iNdEx := 0
+	for iNdEx < l {
+		preIndex := iNdEx
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return ErrIntOverflowCaps
+			}
+			if iNdEx >= l {
+				return io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= (uint64(b) & 0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		fieldNum := int32(wire >> 3)
+		wireType := int(wire & 0x7)
+		if wireType == 4 {
+			return fmt.Errorf("proto: APICap: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: APICap: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field ID", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowCaps
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= (uint64(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthCaps
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.ID = string(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
+		case 2:
+			if wireType != 0 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Enabled", wireType)
+			}
+			var v int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowCaps
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				v |= (int(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			m.Enabled = bool(v != 0)
+		case 3:
+			if wireType != 0 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Deprecated", wireType)
+			}
+			var v int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowCaps
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				v |= (int(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			m.Deprecated = bool(v != 0)
+		case 4:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field DisabledReason", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowCaps
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= (uint64(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthCaps
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.DisabledReason = string(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
+		case 5:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field DisabledReasonMsg", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowCaps
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= (uint64(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthCaps
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.DisabledReasonMsg = string(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
+		case 6:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field DisabledAlternative", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowCaps
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= (uint64(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthCaps
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.DisabledAlternative = string(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
+		default:
+			iNdEx = preIndex
+			skippy, err := skipCaps(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if skippy < 0 {
+				return ErrInvalidLengthCaps
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.XXX_unrecognized = append(m.XXX_unrecognized, dAtA[iNdEx:iNdEx+skippy]...)
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
+func skipCaps(dAtA []byte) (n int, err error) {
+	l := len(dAtA)
+	iNdEx := 0
+	for iNdEx < l {
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return 0, ErrIntOverflowCaps
+			}
+			if iNdEx >= l {
+				return 0, io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= (uint64(b) & 0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		wireType := int(wire & 0x7)
+		switch wireType {
+		case 0:
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return 0, ErrIntOverflowCaps
+				}
+				if iNdEx >= l {
+					return 0, io.ErrUnexpectedEOF
+				}
+				iNdEx++
+				if dAtA[iNdEx-1] < 0x80 {
+					break
+				}
+			}
+			return iNdEx, nil
+		case 1:
+			iNdEx += 8
+			return iNdEx, nil
+		case 2:
+			var length int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return 0, ErrIntOverflowCaps
+				}
+				if iNdEx >= l {
+					return 0, io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				length |= (int(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			iNdEx += length
+			if length < 0 {
+				return 0, ErrInvalidLengthCaps
+			}
+			return iNdEx, nil
+		case 3:
+			for {
+				var innerWire uint64
+				var start int = iNdEx
+				for shift := uint(0); ; shift += 7 {
+					if shift >= 64 {
+						return 0, ErrIntOverflowCaps
+					}
+					if iNdEx >= l {
+						return 0, io.ErrUnexpectedEOF
+					}
+					b := dAtA[iNdEx]
+					iNdEx++
+					innerWire |= (uint64(b) & 0x7F) << shift
+					if b < 0x80 {
+						break
+					}
+				}
+				innerWireType := int(innerWire & 0x7)
+				if innerWireType == 4 {
+					break
+				}
+				next, err := skipCaps(dAtA[start:])
+				if err != nil {
+					return 0, err
+				}
+				iNdEx = start + next
+			}
+			return iNdEx, nil
+		case 4:
+			return iNdEx, nil
+		case 5:
+			iNdEx += 4
+			return iNdEx, nil
+		default:
+			return 0, fmt.Errorf("proto: illegal wireType %d", wireType)
+		}
+	}
+	panic("unreachable")
+}
+
+var (
+	ErrInvalidLengthCaps = fmt.Errorf("proto: negative length found during unmarshaling")
+	ErrIntOverflowCaps   = fmt.Errorf("proto: integer overflow")
+)
+
+func init() { proto.RegisterFile("caps.proto", fileDescriptor_caps_04e1bcd232e9a565) }
+
+var fileDescriptor_caps_04e1bcd232e9a565 = []byte{
+	// 236 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xe2, 0xe2, 0x4a, 0x4e, 0x2c, 0x28,
+	0xd6, 0x2b, 0x28, 0xca, 0x2f, 0xc9, 0x17, 0x92, 0xc8, 0xcd, 0x4f, 0xaa, 0xd4, 0x4b, 0x2a, 0xcd,
+	0xcc, 0x49, 0xc9, 0xce, 0x2c, 0xd1, 0x2b, 0x33, 0xd4, 0x4b, 0x2c, 0xc8, 0x04, 0xc9, 0x4b, 0xe9,
+	0xa6, 0x67, 0x96, 0x64, 0x94, 0x26, 0xe9, 0x25, 0xe7, 0xe7, 0xea, 0xa7, 0xe7, 0xa7, 0xe7, 0xeb,
+	0x83, 0x35, 0x24, 0x95, 0xa6, 0x81, 0x79, 0x60, 0x0e, 0x98, 0x05, 0x31, 0x48, 0xe9, 0x16, 0x23,
+	0x17, 0x9b, 0x63, 0x80, 0xa7, 0x73, 0x62, 0x81, 0x10, 0x1f, 0x17, 0x93, 0xa7, 0x8b, 0x04, 0xa3,
+	0x02, 0xa3, 0x06, 0x67, 0x10, 0x93, 0xa7, 0x8b, 0x90, 0x04, 0x17, 0xbb, 0x6b, 0x5e, 0x62, 0x52,
+	0x4e, 0x6a, 0x8a, 0x04, 0x93, 0x02, 0xa3, 0x06, 0x47, 0x10, 0x8c, 0x2b, 0x24, 0xc7, 0xc5, 0xe5,
+	0x92, 0x5a, 0x50, 0x94, 0x9a, 0x9c, 0x58, 0x92, 0x9a, 0x22, 0xc1, 0x0c, 0x96, 0x44, 0x12, 0x11,
+	0x52, 0xe3, 0xe2, 0x73, 0xc9, 0x2c, 0x06, 0xab, 0x0d, 0x4a, 0x4d, 0x2c, 0xce, 0xcf, 0x93, 0x60,
+	0x01, 0x9b, 0x8a, 0x26, 0x2a, 0xa4, 0xc3, 0x25, 0x88, 0x2a, 0xe2, 0x5b, 0x9c, 0x2e, 0xc1, 0x0a,
+	0x56, 0x8a, 0x29, 0x21, 0x64, 0xc0, 0x25, 0x0c, 0x13, 0x74, 0xcc, 0x29, 0x49, 0x2d, 0xca, 0x4b,
+	0x2c, 0xc9, 0x2c, 0x4b, 0x95, 0x60, 0x03, 0xab, 0xc7, 0x26, 0xe5, 0xc4, 0x73, 0xe2, 0x91, 0x1c,
+	0xe3, 0x85, 0x47, 0x72, 0x8c, 0x0f, 0x1e, 0xc9, 0x31, 0x26, 0xb1, 0x81, 0x7d, 0x6c, 0x0c, 0x08,
+	0x00, 0x00, 0xff, 0xff, 0x02, 0x2d, 0x9e, 0x91, 0x48, 0x01, 0x00, 0x00,
+}

vendor/github.com/moby/buildkit/util/apicaps/pb/caps.proto

@@ -0,0 +1,19 @@
+syntax = "proto3";
+
+package moby.buildkit.v1.apicaps;
+
+import "github.com/gogo/protobuf/gogoproto/gogo.proto";
+
+option (gogoproto.sizer_all) = true;
+option (gogoproto.marshaler_all) = true;
+option (gogoproto.unmarshaler_all) = true;
+
+// APICap defines a capability supported by the service
+message APICap {
+	string ID = 1;
+	bool Enabled = 2;
+	bool Deprecated = 3; // Unused. May be used for warnings in the future
+	string DisabledReason = 4; // Reason key for detection code
+	string DisabledReasonMsg = 5; // Message to the user
+	string DisabledAlternative = 6; // Identifier that updated client could catch.
+}

vendor/github.com/moby/buildkit/util/apicaps/pb/generate.go

@@ -0,0 +1,3 @@
+package moby_buildkit_v1_apicaps
+
+//go:generate protoc -I=. -I=../../../vendor/ -I=../../../../../../ --gogo_out=plugins=grpc:. caps.proto