bug#48963: "guix build guix" halts after exhausting memory

["Ludovic Courtès" <ludo@gnu.org>]

Hi,

Ludovic Courtès <ludo@gnu.org> skribis:

> Julien Lepiller <julien@lepiller.eu> skribis:

>> Can we instead break the build (at the Makefile level) into multiple
>> smaller chunks, that require less memory, in the same way (guix self)
>> works?
>
> Yes, that’s a good idea.
>
> Could you check the extent to which the attached patch helps on this
> machine?
>
> It doesn’t split as much as (guix self) does, only in three pieces, but
> hopefully that helps a bit.  A side effect is that progress report is
> now off, but we can fix it later.

I pushed a variant of this patch, resorting to an ugly hack so that
compile-all.scm can still estimate progress.  The estimate is correct if
you’re building all the .go files, not so much if you just do, say:

  make
  rm guix/cpio.go && make

because guix/cpio.scm is in the first module set, so it’ll think it’s
starting from scratch and display “0%”.

Fixing it is left as an exercise to the reader.  :-)

It seemed more important to me to fix the memory exhaustion issue first.

Thanks,
Ludo’.