bug#71332: guix gc delete order

bug#71332: guix gc delete order

[Nicolas Graves via Bug reports for GNU Guix]

Hi Guix,

I feel the way `guix gc` choose its files to delete quite
inconvenient. For instance, when developping big programs locally, I
often find myself missing space, but when I will `guix gc -C30G`,
instead of the expected unused items (not present in any profile, just
built but discarded as the package I'm building is updated for
instance), I will instead loose most of the native-inputs that are
needed to build my `guix home` and `guix system`.

This make me stuck in an endless loop of removing / redownloading over
and over the same native-inputs, while my intention is first to remove
files that aren't these native-inputs.

I haven't delved into `guix gc` yet, how hard is that issue to solve? 

-- 
Best regards,
Nicolas Graves

bug#71332: guix gc delete order

[Guillaume Le Vaillant]

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Nicolas Graves via Bug reports for GNU Guix <bug-guix@gnu.org> skribis:

> Hi Guix,
>
> I feel the way `guix gc` choose its files to delete quite
> inconvenient. For instance, when developping big programs locally, I
> often find myself missing space, but when I will `guix gc -C30G`,
> instead of the expected unused items (not present in any profile, just
> built but discarded as the package I'm building is updated for
> instance), I will instead loose most of the native-inputs that are
> needed to build my `guix home` and `guix system`.
>
> This make me stuck in an endless loop of removing / redownloading over
> and over the same native-inputs, while my intention is first to remove
> files that aren't these native-inputs.
>
> I haven't delved into `guix gc` yet, how hard is that issue to solve? 

Hi.
Is the guix-daemon of your system started with the
"--gc-keep-derivations=yes" and "--gc-keep-outputs=yes" options?
It should prevent "guix gc" from deleting the build dependencies of live
profiles.

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bug#71332: guix gc delete order

[Nicolas Graves via Bug reports for GNU Guix]

On 2024-06-03 09:30, Guillaume Le Vaillant wrote:

> Hi.
> Is the guix-daemon of your system started with the
> "--gc-keep-derivations=yes" and "--gc-keep-outputs=yes" options?
> It should prevent "guix gc" from deleting the build dependencies of live
> profiles.

Probably not if they have to be added through the extra-options field of
<guix-configuration> record. I'll try that, thanks! 

-- 
Best regards,
Nicolas Graves

bug#71332: guix gc delete order

[Andrew Tropin via Bug reports for GNU Guix]

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On 2024-06-03 15:26, Nicolas Graves via Bug reports for GNU Guix wrote:

> On 2024-06-03 09:30, Guillaume Le Vaillant wrote:
>
>> Hi.
>> Is the guix-daemon of your system started with the
>> "--gc-keep-derivations=yes" and "--gc-keep-outputs=yes" options?
>> It should prevent "guix gc" from deleting the build dependencies of live
>> profiles.

Didn't know about those options, thank you for sharing!

>
> Probably not if they have to be added through the extra-options field of
> <guix-configuration> record. I'll try that, thanks! 

I was suffering from the issue you have.  After I updated SSD I just
don't do gc, but it would be a good fix for the problem, if it works.

-- 
Best regards,
Andrew Tropin 

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