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)
 	}