bug#52559: guix pull fails with `Unknown command: nix fish: nix show-derivation "~/.fr-sqOEpp/....-module-import-compiled.drv"

[Grigory Shepelev]

Although I was able to "guix pull" with "sudo", as root user normally. As far as I know guix pull updates only per-user when called.
Can I use the result from root somehow?

пт, 17 дек. 2021 г. в 08:50, Grigory Shepelev <shegeley@gmail.com>:

Thanks for your research.
Any ideas on how to fix it? I would change the file itself, but /gnu/store is read-only.

пт, 17 дек. 2021 г. в 00:50, Maxime Devos <maximedevos@telenet.be>:

Grigory Shepelev schreef op vr 17-12-2021 om 00:12 [+0300]:
> Extended research. Lead to
>
> ERROR: In procedure primitive-load:
> In procedure scm_lreadr: /gnu/store/l375q7zi0k894a03xdfsq8qsm5nh2m97-
> module-import/guix/build/utils.scm:822:1: illegal character in escape
> sequence: #\return
>
> Possibly related to https://www.mail-archive.com/help-
> guix@gnu.org/msg12265.html

Here's a minimal reproducer:

Run the following in a REPL:
(call-with-input-string "\"Hello\\\rcarriage return!\"" read).

Alternatively, run guile -l c.scm on the attached file.

In both cases, you'll get
> invalid character in escape sequence: #\return
> > >

Greetings,
Maxime