GNU bug report logs - #52347
Shell: error when -m manifest is removed

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From: Ludovic Courtès <ludo <at> gnu.org>
To: Cayetano Santos <cayetano.santos <at> inventati.org>
Cc: 52347 <at> debbugs.gnu.org
Subject: bug#52347: Shell: error when -m manifest is removed
Date: Wed, 22 Dec 2021 23:49:19 +0100

Hi Cayetano,

Cayetano Santos <cayetano.santos <at> inventati.org> skribis:

>  Following command works
>
>    guix shell --container -m manifest.scm -- python3
>
>  But
>
>    guix shell --container -- python3
>
> gives an error. However,
>
>    guix shell --container
>
> followed by
>
>    python3
>
> works.
>
>  So, by just removing the ’-m manifest.scm’ flag, I get an error.

As Liliana noted, this is the intended behavior: auto-loading of
‘manifest.scm’ happens only for interactive use.  This is to keep
non-interactive use context-independent and thereby avoid bad surprises.

Note that when ‘manifest.scm’ is auto-loaded, a message is printed; when
it’s not considered, no message is printed.  Likewise, when creating an
empty environment, a warning is printed (twice even :-)).

Any suggestions on things we might improve to avoid confusion?

Thanks,
Ludo’.

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