bug#50180: gnu: ocaml-ppxlib: Add package argument.

[pukkamustard]

Retracting in favor of patch sent to #49868 
(https://issues.guix.gnu.org/49868#11).

pukkamustard <pukkamustard@posteo.net> writes:

> This fixes broken build of ocaml-ppx-hash.
>
> I don't quite understand why this works. See also #49867 
> (https://issues.guix.gnu.org/49867#96) and #49868 
> (https://issues.guix.gnu.org/49868#8).
>
> [2. text/x-patch; 0001-gnu-ocaml-ppxlib-Add-package-argument.patch]...