Subject: Re: bug#42047: [PATCH 0/3] Running guix gc on the Hurd.

From: Ludovic Courtès <[email-masked]>
Date: Fri, 26 Jun 2020 17:46:04 +0200

"Jan (janneke) Nieuwenhuizen" <[email-masked]> skribis:

> With these two fixes, it boots again.  These are really minor fixes/typo-like
> oversights and I was considering to "just push" them... but then I found that
> the "guix build" command is also broken:
>
> root@guixygnu ~# guix build -e '(@@ (gnu packages commencement) gnu-make-boot0)'
> Backtrace:
> In ice-9/boot-9.scm:
>   1736:10  4 (with-exception-handler _ _ #:unwind? _ # _)
> In unknown file:
>            3 (apply-smob/0 #<thunk 2d5380>)
> In ice-9/boot-9.scm:
>     718:2  2 (call-with-prompt _ _ #<procedure default-prompt-handle?>)
> In ice-9/eval.scm:
>     619:8  1 (_ #(#(#<directory (guile-user) 2cc820>)))
> In guix/ui.scm:
>   1948:12  0 (run-guix-command _ . _)
>
> guix/ui.scm:1948:12: In procedure run-guix-command:
> In procedure struct-vtable: Wrong type argument in position 1 (expecting struct): #f

For the record, janneke found that this was cause by ‘open-connection’
returning #f; that, in turn, happened due to a bug introduced in Guile
3.0.4:

  https://bugs.gnu.org/42060

Guix commit 641631c1a2590acb1778ebb7b3a141beb8e7448b solves this
problem.

Ludo’.