bug#32018: Guixsd pull error on very old install

bug#32018: Guixsd pull error on very old install

[swedebugia]

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Hi
Trying to get an updated an old GuixSD installation via guix pull on a pre 0.10 GuixSD returned an error message about gexp-modules not found. (details can be provided if asked). 

I suggest we either test pulling from old versions (and fix errors) or make it clear in the manual that pulling from very old GuixSD (older than 0.12?) is not supported.

Stating this clearly help people know what to expect.

What do you think? 
-- 
Cheers Swedebugia 

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bug#32018: Guixsd pull error on very old install

[Ludovic Courtès]

Hello,

swedebugia <swedebugia@riseup.net> skribis:

> Trying to get an updated an old GuixSD installation via guix pull on a pre 0.10 GuixSD returned an error message about gexp-modules not found. (details can be provided if asked). 

Could you post the full backtrace?

> I suggest we either test pulling from old versions (and fix errors) or make it clear in the manual that pulling from very old GuixSD (older than 0.12?) is not supported.

Pulling from a very old Guix may not work.  We try hard to keep things
running, but the old ‘guix pull’ had defects, plus the file
build-aux/build-self.scm (which ‘guix pull’ runs) might use features not
found in very old versions.

> Stating this clearly help people know what to expect.

I agree.

Thanks,
Ludo’.

bug#32018: Guixsd pull error on very old install

[Pjotr Prins]

On Mon, Jul 02, 2018 at 11:39:40AM +0200, Ludovic Courtès wrote:
> Hello,
> 
> swedebugia <swedebugia@riseup.net> skribis:
> 
> > Trying to get an updated an old GuixSD installation via guix pull on a pre 0.10 GuixSD returned an error message about gexp-modules not found. (details can be provided if asked). 
> 
> Could you post the full backtrace?
> 
> > I suggest we either test pulling from old versions (and fix errors) or make it clear in the manual that pulling from very old GuixSD (older than 0.12?) is not supported.
> 
> Pulling from a very old Guix may not work.  We try hard to keep things
> running, but the old ‘guix pull’ had defects, plus the file
> build-aux/build-self.scm (which ‘guix pull’ runs) might use features not
> found in very old versions.

How about making sure that 'guix pull' works between major releases?
That should be reasonably easy to test.

When there is a disruptive release for guix pull make sure the user
upgrades to the closest previous release first. I.e., multi-step
releases are less fraught with breakage.

That way you get an incremental path to upgrade. And you only need to
test between major releases.

Pj.

bug#32018: Guixsd pull error on very old install

[Ludovic Courtès]

Pjotr Prins <pjotr.public12@thebird.nl> skribis:

> On Mon, Jul 02, 2018 at 11:39:40AM +0200, Ludovic Courtès wrote:
>> Hello,
>> 
>> swedebugia <swedebugia@riseup.net> skribis:
>> 
>> > Trying to get an updated an old GuixSD installation via guix pull on a pre 0.10 GuixSD returned an error message about gexp-modules not found. (details can be provided if asked). 
>> 
>> Could you post the full backtrace?
>> 
>> > I suggest we either test pulling from old versions (and fix errors) or make it clear in the manual that pulling from very old GuixSD (older than 0.12?) is not supported.
>> 
>> Pulling from a very old Guix may not work.  We try hard to keep things
>> running, but the old ‘guix pull’ had defects, plus the file
>> build-aux/build-self.scm (which ‘guix pull’ runs) might use features not
>> found in very old versions.
>
> How about making sure that 'guix pull' works between major releases?
> That should be reasonably easy to test.
>
> When there is a disruptive release for guix pull make sure the user
> upgrades to the closest previous release first. I.e., multi-step
> releases are less fraught with breakage.
>
> That way you get an incremental path to upgrade. And you only need to
> test between major releases.

I agree, yes.  That’s a reasonable goal and one that should be easier to
achieve now with the new ‘guix pull’.

Note that swedebugia was talking of a pre-0.10 GuixSD, more than 2.5
years old, which represents a looong time for a pre-1.0 piece of
software that evolves pretty fast.  :-)

Thank you,
Ludo’.

bug#32018: Guixsd pull error on very old install

[swedebugia]

Closed because I do not intend to investigate further and we do not
support pulling from too old guix versions because of our rapid dev
speed pre-1.0.

-- 
Cheers 
Swedebugia