Sure, the attached patch should work on the ELPA version.

On Tue, Jun 21, 2022 at 3:50 AM Lars Ingebrigtsen <larsi@gnus.org> wrote:

> Gulshan Singh <gsingh2011@gmail.com> writes:
>
> > Do you know what's normally done in cases like this? Even if
> > persist.el is maintained externally, should we just merge my patch and
> > close this bug if we can't get a response from the maintainer?
>
> Yes, we can merge the patch.  However, it doesn't seem to apply to the
> version we have in ELPA -- the upstream and the ELPA version have
> already diverged, apparently.
>
> Can you respin the patch against the version in GNU ELPA?
>
> --
> (domestic pets only, the antidote for overdose, milk.)
>    bloggy blog: http://lars.ingebrigtsen.no
>