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

From: L p R n d n
Subject: Re: GRUB fallback mechanism [was Re: Brain storming cool Guix features]
Date: Mon, 14 Jan 2019 15:15:41 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1 (gnu/linux)


Ludovic Courtès <address@hidden> writes:

> 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:
>>> 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…

Personally, I never thought about a guix failure here, more about
power-outtage or anything we can't control. :D

> Ludo’.

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