protobuf: remove gogoproto

Removes gogo/protobuf from buildx and updates to a version of
moby/buildkit where gogo is removed.

This also changes how the proto files are generated. This is because
newer versions of protobuf are more strict about name conflicts. If two
files have the same name (even if they are relative paths) and are used
in different protoc commands, they'll conflict in the registry.

Since protobuf file generation doesn't work very well with
`paths=source_relative`, this removes the `go:generate` expression and
just relies on the dockerfile to perform the generation.

Signed-off-by: Jonathan A. Sternberg <jonathan.sternberg@docker.com>

vendor/golang.org/x/tools/internal/aliases/aliases.go

@@ -0,0 +1,38 @@
+// Copyright 2024 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package aliases
+
+import (
+	"go/token"
+	"go/types"
+)
+
+// Package aliases defines backward compatible shims
+// for the types.Alias type representation added in 1.22.
+// This defines placeholders for x/tools until 1.26.
+
+// NewAlias creates a new TypeName in Package pkg that
+// is an alias for the type rhs.
+//
+// The enabled parameter determines whether the resulting [TypeName]'s
+// type is an [types.Alias]. Its value must be the result of a call to
+// [Enabled], which computes the effective value of
+// GODEBUG=gotypesalias=... by invoking the type checker. The Enabled
+// function is expensive and should be called once per task (e.g.
+// package import), not once per call to NewAlias.
+//
+// Precondition: enabled || len(tparams)==0.
+// If materialized aliases are disabled, there must not be any type parameters.
+func NewAlias(enabled bool, pos token.Pos, pkg *types.Package, name string, rhs types.Type, tparams []*types.TypeParam) *types.TypeName {
+	if enabled {
+		tname := types.NewTypeName(pos, pkg, name, nil)
+		newAlias(tname, rhs, tparams)
+		return tname
+	}
+	if len(tparams) > 0 {
+		panic("cannot create an alias with type parameters when gotypesalias is not enabled")
+	}
+	return types.NewTypeName(pos, pkg, name, rhs)
+}

vendor/golang.org/x/tools/internal/aliases/aliases_go121.go

@@ -0,0 +1,37 @@
+// Copyright 2024 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build !go1.22
+// +build !go1.22
+
+package aliases
+
+import (
+	"go/types"
+)
+
+// Alias is a placeholder for a go/types.Alias for <=1.21.
+// It will never be created by go/types.
+type Alias struct{}
+
+func (*Alias) String() string                                { panic("unreachable") }
+func (*Alias) Underlying() types.Type                        { panic("unreachable") }
+func (*Alias) Obj() *types.TypeName                          { panic("unreachable") }
+func Rhs(alias *Alias) types.Type                            { panic("unreachable") }
+func TypeParams(alias *Alias) *types.TypeParamList           { panic("unreachable") }
+func SetTypeParams(alias *Alias, tparams []*types.TypeParam) { panic("unreachable") }
+func TypeArgs(alias *Alias) *types.TypeList                  { panic("unreachable") }
+func Origin(alias *Alias) *Alias                             { panic("unreachable") }
+
+// Unalias returns the type t for go <=1.21.
+func Unalias(t types.Type) types.Type { return t }
+
+func newAlias(name *types.TypeName, rhs types.Type, tparams []*types.TypeParam) *Alias {
+	panic("unreachable")
+}
+
+// Enabled reports whether [NewAlias] should create [types.Alias] types.
+//
+// Before go1.22, this function always returns false.
+func Enabled() bool { return false }

vendor/golang.org/x/tools/internal/aliases/aliases_go122.go

@@ -0,0 +1,98 @@
+// Copyright 2024 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build go1.22
+// +build go1.22
+
+package aliases
+
+import (
+	"go/ast"
+	"go/parser"
+	"go/token"
+	"go/types"
+)
+
+// Alias is an alias of types.Alias.
+type Alias = types.Alias
+
+// Rhs returns the type on the right-hand side of the alias declaration.
+func Rhs(alias *Alias) types.Type {
+	if alias, ok := any(alias).(interface{ Rhs() types.Type }); ok {
+		return alias.Rhs() // go1.23+
+	}
+
+	// go1.22's Alias didn't have the Rhs method,
+	// so Unalias is the best we can do.
+	return Unalias(alias)
+}
+
+// TypeParams returns the type parameter list of the alias.
+func TypeParams(alias *Alias) *types.TypeParamList {
+	if alias, ok := any(alias).(interface{ TypeParams() *types.TypeParamList }); ok {
+		return alias.TypeParams() // go1.23+
+	}
+	return nil
+}
+
+// SetTypeParams sets the type parameters of the alias type.
+func SetTypeParams(alias *Alias, tparams []*types.TypeParam) {
+	if alias, ok := any(alias).(interface {
+		SetTypeParams(tparams []*types.TypeParam)
+	}); ok {
+		alias.SetTypeParams(tparams) // go1.23+
+	} else if len(tparams) > 0 {
+		panic("cannot set type parameters of an Alias type in go1.22")
+	}
+}
+
+// TypeArgs returns the type arguments used to instantiate the Alias type.
+func TypeArgs(alias *Alias) *types.TypeList {
+	if alias, ok := any(alias).(interface{ TypeArgs() *types.TypeList }); ok {
+		return alias.TypeArgs() // go1.23+
+	}
+	return nil // empty (go1.22)
+}
+
+// Origin returns the generic Alias type of which alias is an instance.
+// If alias is not an instance of a generic alias, Origin returns alias.
+func Origin(alias *Alias) *Alias {
+	if alias, ok := any(alias).(interface{ Origin() *types.Alias }); ok {
+		return alias.Origin() // go1.23+
+	}
+	return alias // not an instance of a generic alias (go1.22)
+}
+
+// Unalias is a wrapper of types.Unalias.
+func Unalias(t types.Type) types.Type { return types.Unalias(t) }
+
+// newAlias is an internal alias around types.NewAlias.
+// Direct usage is discouraged as the moment.
+// Try to use NewAlias instead.
+func newAlias(tname *types.TypeName, rhs types.Type, tparams []*types.TypeParam) *Alias {
+	a := types.NewAlias(tname, rhs)
+	SetTypeParams(a, tparams)
+	return a
+}
+
+// Enabled reports whether [NewAlias] should create [types.Alias] types.
+//
+// This function is expensive! Call it sparingly.
+func Enabled() bool {
+	// The only reliable way to compute the answer is to invoke go/types.
+	// We don't parse the GODEBUG environment variable, because
+	// (a) it's tricky to do so in a manner that is consistent
+	//     with the godebug package; in particular, a simple
+	//     substring check is not good enough. The value is a
+	//     rightmost-wins list of options. But more importantly:
+	// (b) it is impossible to detect changes to the effective
+	//     setting caused by os.Setenv("GODEBUG"), as happens in
+	//     many tests. Therefore any attempt to cache the result
+	//     is just incorrect.
+	fset := token.NewFileSet()
+	f, _ := parser.ParseFile(fset, "a.go", "package p; type A = int", 0)
+	pkg, _ := new(types.Config).Check("p", fset, []*ast.File{f}, nil)
+	_, enabled := pkg.Scope().Lookup("A").Type().(*types.Alias)
+	return enabled
+}