Hello Ludo,

> I didn’t look at the other patches, but note that ‘sendfile’ blocks.
> Since Cuirass is fiberized, you shouldn’t block a fiber.
>
> ‘guix publish’ doesn’t use Fibers but it shouldn’t block either while
> sending a nar, so what it does is spawn a new thread for the ‘sendfile’
> call.

Thanks for your help! I copied what's done in (guix scripts publish),
except that I used "non-blocking" instead of using a plain
"call-with-new-thread".

If you could have a short look to the first patch (introducing
build products) and tell me if the concept is ok for you, that would be
great :)

Thanks,

Mathieu