// distinguished error for “repo not found” and treat everything else
// as terminal.)
type VCSError struct {
	Err error
}

func (e *VCSError) Error() string { return e.Err.Error() }

func (e *VCSError) Unwrap() error { return e.Err }

func vcsErrorf(format string, a ...any) error {
	return &VCSError{Err: fmt.Errorf(format, a...)}
}

type vcsCacheKey struct {
	vcs    string
	remote string
}

			Date     string `xml:"date"`
		} `xml:"logentry"`
	}
	if err := xml.Unmarshal([]byte(out), &log); err != nil {
		return nil, vcsErrorf("unexpected response from svn log --xml: %v\n%s", err, out)
	}

	t, err := time.Parse(time.RFC3339, log.Logentry.Date)
	if err != nil {
		return nil, vcsErrorf("unexpected response from svn log --xml: %v\n%s", err, out)
	}

	info := &RevInfo{

}

func lookupCodeRepo(ctx context.Context, rr *vcs.RepoRoot) (codehost.Repo, error) {
	code, err := codehost.NewRepo(ctx, rr.VCS.Cmd, rr.Repo)
	if err != nil {
		if _, ok := err.(*codehost.VCSError); ok {
			return nil, err
		}
		return nil, fmt.Errorf("lookup %s: %v", rr.Root, err)
	}
	return code, nil
}

// A loggingRepo is a wrapper around an underlying Repo