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Re: Update on

From: Christopher Baines
Subject: Re: Update on
Date: Wed, 18 Aug 2021 17:39:25 +0100
User-agent: mu4e 1.4.15; emacs 27.2

Vagrant Cascadian <> writes:

> On 2021-08-18, Christopher Baines wrote:
>> Around 2 months ago, came in to existence [1][2].
>> 1: 
>> 2:
>> This took work I'd done on providing substitutes back in 2020 and
>> attempted to bring benefits from that to normal users of Guix.
>> Unfortunately, I don't really know if this has been much of a
>> success.
> I can definitely speak from experience the likelihood of actually
> getting substitutes for any aarch64 linux-libre* packages has gone from
> "rarely" to "usually", so it has definitely been a huge improvement for
> aarch64, where building locally on most aarch64 hardware is very slow.

That's good to hear. Unfortunately I only got around to enabling
armhf-linux builds last week, but now there should be good substitute
availability for armhf-linux as well.

> Does it have faster build machines? Does it keep retrying until it
> succeeds? Building linux-libre* packages for usually
> timeout when building the source due to long periods with no output...

Currently for arm builds, there's a Overdrive machine (monokuma) and a
Honeycomb machine. I would guess that the Honeycomb machine is faster,
but I haven't really compared the performance.

I do have the guix-daemon timeouts set to pretty high values (max silent
time of 12 hours, timeout of 24 hours) which is probably necessary for
the linux-libre* packages.

There's also automatic retries, a failed build will be retried
twice. That's more relevant for things that sometimes fail to build
though, or fail to build on particular hardware, rather than timeouts.

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