bug#64856: guix shell cache doesn't consider grafts

[Ludovic Courtès]

Hello,

Maxim Cournoyer <maxim.courno...@gmail.com> skribis:

> While investigating https://issues.guix.gnu.org/64836, I discovered that
> the cache of 'guix shell' doesn't take into account grafts for
> subsequent invocations.

Fixed in 75bdf8e06a325b90bf387a03f88726d338acbbf6.

Thanks,
Ludo’.