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From: Tobias Geerinckx-Rice via Guix-patches via <guix-patches@gnu.org>
To: Maxim Cournoyer <maxim.cournoyer@gmail.com>
Cc: 60068@debbugs.gnu.org
Subject: [bug#60068] [PATCH 1/2] guix-install.sh: Add GUIX_ALLOW_OVERWRITE environment variable.
Date: Wed, 14 Dec 2022 17:16:19 +0100	[thread overview]
Message-ID: <875yeec57z.fsf@nckx> (raw)
In-Reply-To: <20221214155603.29381-1-maxim.cournoyer@gmail.com>

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Hi Maxim,

Nice!  More steps towards world domination.

Maxim Cournoyer 写道:
> +# Environment variables

These sound like they should be command-line arguments.

[…]

Actually, I'm not totally sold on GUIX_ALLOW_OVERWRITE.  It's not 
solving much a problem.

Instead, the error message could be specific about what it 
considers a ‘previous Guix installation’ — which would be a good 
idea regardless — and tell the admin exactly what needs to be 
removed to continue.

>      "groupadd"
> +    "useradd"

Good catch, but separate patch.  (♪)

> -    if [[ -e "/var/guix" || -e "/gnu" ]]; then
> +    if [[ -z $GUIX_ALLOW_OVERWRITE && (-e /var/guix || -e /gnu) 
> ]]; then
>          die "A previous Guix installation was found.  Refusing 
>          to overwrite."
> +    else
> +        _msg "${WAR}Overwriting existing installation!"
>      fi
>  
>      cd "$tmp_path"
> -    tar --extract --file "$pkg" && _msg "${PAS}unpacked 
> archive"
> -
>      _msg "${INF}Installing /var/guix and /gnu..."
> -    mv "${tmp_path}/var/guix" /var/
> -    mv "${tmp_path}/gnu" /
> +    tar --extract --file "$pkg" -C /

I'm still in favour of using something like ‘mktemp -d 
/gnu.XXXXXX’ here if there's no security flaw I missed.  WDYT?

If the overwrite functionality is kept, we should remove the old 
directories before re-populating them.

Kind regards,

T G-R

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  parent reply	other threads:[~2022-12-14 16:35 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-12-14 15:56 [bug#60068] [PATCH 1/2] guix-install.sh: Add GUIX_ALLOW_OVERWRITE environment variable Maxim Cournoyer
2022-12-14 15:56 ` [bug#60069] [PATCH 2/2] guix-install.sh: Directly exit in case of errors in chk_require Maxim Cournoyer
2022-12-14 16:37   ` Tobias Geerinckx-Rice via Guix-patches via
2022-12-14 18:17     ` Maxim Cournoyer
2022-12-14 18:33       ` Maxim Cournoyer
2022-12-14 16:16 ` Tobias Geerinckx-Rice via Guix-patches via [this message]
2022-12-14 18:25   ` [bug#60068] [PATCH 1/2] guix-install.sh: Add GUIX_ALLOW_OVERWRITE environment variable Maxim Cournoyer
2023-02-04  4:36     ` Maxim Cournoyer
2022-12-14 20:46 ` [bug#60068] [PATCH v2 1/3] guix-install.sh: Add missing "useradd" command Maxim Cournoyer
2022-12-14 20:46   ` [bug#60068] [PATCH v2 2/3] guix-install.sh: Add GUIX_ALLOW_OVERWRITE environment variable Maxim Cournoyer
2022-12-15 14:43     ` [bug#60068] bug#60069: [PATCH 2/2] guix-install.sh: Directly exit in case of errors in chk_require Ludovic Courtès
2022-12-16  5:07       ` [bug#60069] " Maxim Cournoyer
2022-12-15 14:44     ` [bug#60068] bug#60069: " Ludovic Courtès
2022-12-14 20:46   ` [bug#60068] [PATCH v2 3/3] " Maxim Cournoyer
2022-12-15 14:41   ` [bug#60068] bug#60069: [PATCH 2/2] " Ludovic Courtès
2022-12-16  5:24     ` Maxim Cournoyer

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