Add a patch by Ludovic Courtès <ludo@gnu.org> from the upstream shepherd repository to partially fix <https://bugs.gnu.org/30299>. * gnu/packages/patches/shepherd-herd-status-sorted.patch: New file. * gnu/local.mk (dist_patch_DATA): Add it. * gnu/packages/admin.scm (shepherd)[source]: Add patch.
		
			
				
	
	
		
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From cc9564586729a5bb90dd5d2722b543fdde9ab821 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Ludovic=20Court=C3=A8s?= <ludo@gnu.org>
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Date: Sun, 4 Feb 2018 21:56:36 +0100
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Subject: [PATCH] herd: 'herd status' now sorts the result.
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Partly fixes <https://bugs.gnu.org/30299>.
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Reported by Mark H Weaver <mhw@netris.org>.
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Previously 'tests/basic.sh' could occasionally fail on:
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  test "`$herd status`" == "$pristine_status"
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because the order of stopped services were not always the same.  Indeed,
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those services come from 'service-list' on the shepherd side, which uses
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'hash-fold' to traverse the service hash table, and the traversal order
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of 'hash-fold' is undefined.
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* modules/shepherd/scripts/herd.scm (display-status-summary)[service<?]:
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New procedure.
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[display-services]: Call 'sort' and use the above.
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---
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 modules/shepherd/scripts/herd.scm | 8 ++++++--
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 modules/shepherd/service.scm      | 5 +++--
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 2 files changed, 9 insertions(+), 4 deletions(-)
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diff --git a/modules/shepherd/scripts/herd.scm b/modules/shepherd/scripts/herd.scm
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index ebcd1e1..697446c 100644
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--- a/modules/shepherd/scripts/herd.scm
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+++ b/modules/shepherd/scripts/herd.scm
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@@ -1,5 +1,5 @@
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 ;; herd.scm -- The program to herd the Shepherd.
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-;; Copyright (C) 2013, 2014, 2016 Ludovic Courtès <ludo@gnu.org>
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+;; Copyright (C) 2013, 2014, 2016, 2018 Ludovic Courtès <ludo@gnu.org>
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 ;; Copyright (C) 2002, 2003 Wolfgang Jährling <wolfgang@pro-linux.de>
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 ;;
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 ;; This file is part of the GNU Shepherd.
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@@ -46,13 +46,17 @@ of pairs."
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 (define (display-status-summary services)
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   "Display a summary of the status of all of SERVICES."
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+  (define (service<? service1 service2)
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+    (string<? (symbol->string (service-canonical-name service1))
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+              (symbol->string (service-canonical-name service2))))
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+
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   (define (display-services header bullet services)
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     (unless (null? services)
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       (display header)
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       (for-each (lambda (service)
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                   (format #t " ~a ~a~%" bullet
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                           (service-canonical-name service)))
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-                services)))
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+                (sort services service<?))))      ;get deterministic output
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   (call-with-values
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       (lambda ()
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         (partition (match-lambda
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diff --git a/modules/shepherd/service.scm b/modules/shepherd/service.scm
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index 0ad28a0..83600e4 100644
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--- a/modules/shepherd/service.scm
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+++ b/modules/shepherd/service.scm
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@@ -1,5 +1,5 @@
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 ;; service.scm -- Representation of services.
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-;; Copyright (C) 2013, 2014, 2015, 2016, 2017 Ludovic Courtès <ludo@gnu.org>
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+;; Copyright (C) 2013, 2014, 2015, 2016, 2017, 2018 Ludovic Courtès <ludo@gnu.org>
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 ;; Copyright (C) 2002, 2003 Wolfgang Järling <wolfgang@pro-linux.de>
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 ;; Copyright (C) 2014 Alex Sassmannshausen <alex.sassmannshausen@gmail.com>
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 ;; Copyright (C) 2016 Alex Kost <alezost@gmail.com>
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@@ -949,7 +949,8 @@ Return #f if service is not found."
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                  %services))
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 (define (service-list)
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-  "Return the list of services currently defined."
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+  "Return the list of services currently defined.  Note: The order of the list
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+returned in unspecified."
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   (hash-fold (lambda (name services result)
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                (let ((service (lookup-canonical-service name services)))
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                  (if service
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-- 
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2.16.1
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