Re: ‘guix publish’ now compresses archives

[Ludovic Courtès]

Andy Wingo <address@hidden> skribis:

> On Tue 19 Jul 2016 00:22, address@hidden (Ludovic Courtès) writes:
>
>> To recap, the difficulty with all this is that we couldn’t just call out
>> the ‘gzip’ command because ‘guix publish’ uses threads, and threads and
>> fork(2) don’t go together well.
>
> FWIW open-pipe or open-process from (ice-9 popen) should work reliably.
> The child is carefully written to be async-signal-safe before the
> execve().

Yes, but ‘filtered-output-port’, used by ‘compressed-output-port’ in
(guix utils) is not implemented in terms of (ice-9 popen).

Ludo’.