* GNU Shepherd 0.9.3 released
@ 2022-11-17 9:39 Ludovic Courtès
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From: Ludovic Courtès @ 2022-11-17 9:39 UTC (permalink / raw)
To: guix-devel, guile-sources, guile-user, info-gnu
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We are pleased to announce the GNU Shepherd version 0.9.3. This is a
bug-fix release, representing 16 commits by 1 person over 2 months.
The GNU Daemon Shepherd or GNU Shepherd is a service manager written
in Guile that looks after the herd of system services. It provides
dependency-based management for system services: daemons such as
‘sshd’, programs such as Xorg, as well as user-provided actions. The
GNU Shepherd may also be used by unprivileged users to manage per-user
daemons—e.g., tor, privoxy, mcron, etc. It is written in Guile
Scheme, and is configured and extended using Guile.
The GNU Shepherd is developed jointly with the GNU Guix project; it is
used as the init system of Guix, GNU’s advanced GNU/Linux distribution.
Here are the compressed sources and a GPG detached signature[*]:
Use a mirror for higher download bandwidth:
Here are the SHA1 and SHA256 checksums:
[*] Use a .sig file to verify that the corresponding file (without the
.sig suffix) is intact. First, be sure to download both the .sig file
and the corresponding tarball. Then, run a command like this:
gpg --verify shepherd-0.9.3.tar.gz.sig
If that command fails because you don't have the required public key,
then run this command to import it:
gpg --keyserver keys.openpgp.org \
and rerun the 'gpg --verify' command.
This release was bootstrapped with the following tools:
• Changes since version 0.9.2 (excerpt from the NEWS file)
** Service ‘stop’ is now synchronous
Previously, ‘herd stop SERVICE’ would send SIGTERM to the service’s process
and immediately move on without waiting for the process to actually terminate.
This could cause problems for example when running ‘herd restart SERVICE’:
there was a possibility that a new instance of the service would be spawned
before the previous one had terminated.
This is now fixed: ‘stop’ only returns once the process has actually
terminated. Furthermore, the destructor returned by ‘make-kill-destructor’
sends SIGKILL after some grace period has expired if the process is still
around; this is configurable with #:grace-period and
** Non-blocking replacement for ‘system*’
Service code can now call ‘system*’ lightheartedly: shepherd installs a
cooperative, non-blocking replacement for Guile’s ‘system*’ procedure.
Concretely, it means that it’s OK to use ‘system*’, say, in the ‘start’ method
of a service: it won’t block shepherd, one can still interact with it with
** Fewer continuation barriers
The ‘stop’ method of services, and ‘eval’ and ‘load’ actions of the ‘root’
service, and a few other points acted as “continuation barriers”, meaning that
user code would not be allowed to suspend the current fiber for example by
calling the ‘sleep’ procedure from (fiber). These limitations have been
** Reduced memory consumption while logging
Service output logging allocates less memory than before.
** Updated translations: ro, sr
Please report bugs to email@example.com.
Join firstname.lastname@example.org for discussions.
Ludovic, on behalf of the Shepherd herd.
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2022-11-17 9:39 GNU Shepherd 0.9.3 released Ludovic Courtès
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