// construct the path from the environment.
	if testSrcdir, testWorkspace := os.Getenv("TEST_SRCDIR"), os.Getenv("TEST_WORKSPACE"); testSrcdir != "" && testWorkspace != "" {
		t.Logf("Detected bazel env varaiables: TEST_SRCDIR=%q TEST_WORKSPACE=%q", testSrcdir, testWorkspace)
		pkgPath = filepath.Join(testSrcdir, testWorkspace, pkgPath)
	}