Run validation in the selected module

internal/build/build.go

@@ -34,6 +34,7 @@ type Request struct {
 	Spec          Spec
 	OutputDir     string
 	Output        io.Writer
+	ToolOwner     *gotool.Owner
 }
 
 type Artifact struct {
@@ -118,7 +119,11 @@ func Build(ctx context.Context, request Request) (Result, error) {
 		return result, fmt.Errorf("create build output directory %q: %w", result.OutputDir, err)
 	}
 
-	goTool, err := gotool.New(ctx, repositoryDir)
+	owner := request.ToolOwner
+	if owner == nil {
+		owner = gotool.NewOwner(repositoryDir)
+	}
+	goTool, err := owner.Acquire(ctx)
 	if err != nil {
 		return result, fmt.Errorf("prepare Go toolchain: %w", err)
 	}

internal/build/candidate.go

@@ -7,16 +7,17 @@ import (
 	"os"
 
 	"gitea.maximumdirect.net/eric/ReleaseKit/internal/candidate"
+	"gitea.maximumdirect.net/eric/ReleaseKit/internal/gotool"
 	"gitea.maximumdirect.net/eric/ReleaseKit/internal/tempdir"
 )
 
-func CandidateCallback(spec *Spec, output io.Writer) func(context.Context, candidate.Candidate) error {
+func CandidateCallback(spec *Spec, output io.Writer) func(context.Context, candidate.Candidate, *gotool.Owner) error {
 	if spec == nil || len(spec.Targets) == 0 {
 		return nil
 	}
 	selected := *spec
 	selected.Targets = append([]Target(nil), spec.Targets...)
-	return func(ctx context.Context, captured candidate.Candidate) error {
+	return func(ctx context.Context, captured candidate.Candidate, owner *gotool.Owner) error {
 		temporaryDir, err := tempdir.Outside(captured.RepositoryDir, "releasekit-candidate-build-")
 		if err != nil {
 			return fmt.Errorf("create temporary candidate build output: %w", err)
@@ -28,6 +29,7 @@ func CandidateCallback(spec *Spec, output io.Writer) func(context.Context, candi
 			Spec:          selected,
 			OutputDir:     temporaryDir,
 			Output:        output,
+			ToolOwner:     owner,
 		})
 		if err != nil {
 			return fmt.Errorf("build candidate: %w", err)