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Re: GRUB fallback mechanism [was Re: Brain storming cool Guix features]


From: Ludovic Courtès
Subject: Re: GRUB fallback mechanism [was Re: Brain storming cool Guix features]
Date: Sun, 13 Jan 2019 21:58:50 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1 (gnu/linux)

Ricardo Wurmus <address@hidden> skribis:

> swedebugia <address@hidden> writes:
>
>> Leo Famulari <address@hidden> skrev: (11 januari 2019 23:32:12 CET)

[...]

>>>Apparently GRUB has a feature that records a "fallback" system to boot
>>>if booting fails.
>>>
>>>Maybe when reconfiguring, Guix could set the current system as the
>>>fallback so that it would always boot.
>>>
>>>If we did that, we'd want to warn the user somehow... not sure how to
>>>achieve that.
>>>
>>>Discussion of this feature at NixOS:
>>>
>>>https://github.com/NixOS/nixpkgs/issues/26332
>>
>> I don't think automatic fallback is a good idea because it unnecessarily 
>> complicates a now well working simple part of the OS.
>> KISS is a nice principle.
>
> I think exposing this GRUB feature would be good, even if not enabled by
> default.  It does not seem very complicated and can be very useful for
> some users.

I agree.

> Unfortunately, it doesn’t help us when GRUB itself is broken with an
> upgrade, which I think is what was suggested earlier.

We’ll have to assume (and ensure!) this doesn’t happen…

Ludo’.



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