GNU bug report logs - #66419
Incorrect handling of -L flag on guix system commands

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Message #8 received at 66419 <at> debbugs.gnu.org (full text, mbox):

From: Ludovic Courtès <ludo <at> gnu.org>
To: Sergio Pastor Pérez <sergio.pastorperez <at> outlook.es>
Cc: 66419 <at> debbugs.gnu.org
Subject: Re: bug#66419: Incorrect handling of -L flag on guix system commands
Date: Thu, 12 Oct 2023 16:28:51 +0200

Hi,

Sergio Pastor Pérez <sergio.pastorperez <at> outlook.es> skribis:

> λ guix system build -L . bordercollie.scm 
> error: %useful-gnome-extensions: unbound variable
> hint: Did you forget `(use-modules (base-system))'?
>
> /gnu/store/gf21yc9ii1cfd3ki9hnn8ac5d65923ir-system

‘-L’ does more than setting ‘GUILE_LOAD_PATH’; it’s equivalent to ‘-L’
in other ‘guix’ commands, meaning that it changes ‘%package-search-path’
(like the ‘GUIX_PACKAGE_PATH’ environment variable).

In doing so, it causes package lookup by name to traverse all the .scm
files in $PWD in this case.  In other words, ‘guix system -L.’ ends up
loading ./*.scm.  This is probably the source of confusion.

HTH,
Ludo’.

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