syscalls: Adjust 'clone' to Guile 2.2.

Before that, something like:

  (call-with-container
    (lambda ()
      (match (primitive-fork)
        …)))

would hang in 'primitive-fork' as the child process (the one started in
the container) would try to pthread_join the finalization thread in
'stop_finalization_thread' in libguile, not knowing that this thread is
nonexistent.

* guix/build/syscalls.scm (%set-automatic-finalization-enabled?!): New
procedure.
(without-automatic-finalization): New macro.
(clone): Wrap PROC call in 'without-automatic-finalization'.

0 files changed, 0 insertions, 0 deletions