bug#53594: no matching pattern #<package polkit..

[Ludovic Courtès]

Hi!

I hit this as well while running `guix system reconfigure'
(unfortunately I didn't capture the stack trace).

Re-running `guix system reconfigure' right after it had failed
worked...

So my guess is that it's a stateful issue, having to do with
grafts: if polkit is not in the store, then we build/download
it and fail right after that, which is why it succeeds the
second time.

To be continued...

Ludo'.