}
		if !strings.HasPrefix(baseDir, "./") {
			baseDir = "./" + baseDir
		}
		baseDir = strings.TrimRight(baseDir, "/")
		log.Printf("Inspecting imports under %s/...\n", baseDir)

		packages, err := resolvePackageTree(baseDir)
		if err != nil {
			log.Fatalf("Failed to resolve package tree: %v", err)
		} else if len(packages) == 0 {
			log.Fatalf("Found no packages under tree %s", baseDir)
		}