Manolis Ragkousis <manolis837@gmail.com> writes:

> Hello hackers,
>
> Justus tried to build Guix on his Hurd machine and he found out that
> even though we disable (guix build syscalls) from building when
> sys/mount.h is not present, it still tries to build it.
>
> As I found out, (guix utils) module uses the syscalls module so that's
> why it still tried to build it. That's why I followed a different approach.
> I delayed the evaluation of ptr and proc on mount, umount, swapon, etc.
> and it builds now.
>
> WDYT? If you agree with the change I will push it to wip-hurd and/or
> master.

The last time this issue was raised, in August 2015, I came up with
another approach to accomplish the same goal, but without any per-call
overhead.  I vaguely recall proposing it, but I don't remember where or
what came of it.  I've attached it below.

      Mark