bug#57559: guix pull fails on http status code 503

[Maxime Devos]

On 05-09-2022 10:21, zimoun wrote:

> On sam., 03 sept. 2022 at 19:27, Maxime Devos <maximedevos@telenet.be> wrote:
>
> >   * if some but not all channels are available, and there is at least
> >     one updated channel --> log the missing channels, and update the
> >     channels that _are_ available (but don't 'ignore' the missing
> >     channels by removing them!).
> >       
> What do you mean by «but don't 'ignore' the missing channels by removing
> them!»?  Do you mean keep the last revision locally known for this
> channel?
>

I'm not sure what you're asking, because of the negatives.

With "but don't ignore [...] by [...]", I meant that, yes.

If you meant "don't ignore [...] by [...]", then no, with 'ignoring by removing', I meant, literally removing them.  More concretely, a situation like this:

• In the channels.scm, two channels are declared: guix and guix-foo.
• User does "guix pull"; Guix downloads the source code of guix and guix-foo.
• Downloading guix failed (503).  As such, Guix decided to ignore the guix channel, by removing it from the list of channels to build. (The in-memory list I mean, I don't mean modifying the channels.smc file)
  
• Guix tries building the guix-foo channel and installing it, without the guix channel.
• This cannot work (the guix-foo channel uses modules from guix for basic stuff like G-exps, packages, coreutils, ..., and it was the removed guix channel that had things build-aux/build-self.scm which is required for pulling).

(It's not unlike double negatives! I first thought of the latter interpretation but on second thought you might have meant the former.)

Greetings,
Maxime.

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