02/03: services: hurd: Add dummy loopback.

[guix-commits]

janneke pushed a commit to branch wip-hurd-vm
in repository guix.

commit 393e8eee9ecd6a385957710015f0592f5a2feec2
Author: Jan (janneke) Nieuwenhuizen <address@hidden>
AuthorDate: Mon Apr 13 22:51:00 2020 +0200

    services: hurd: Add dummy loopback.
    
    * gnu/services/hurd.scm (hurd-loopback-shepherd-service,
    hurd-loopback-service-type): New function.
    (hurd-service->shepherd-service): Use them to support entry for dummy
    loopback.
---
 gnu/services/hurd.scm | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/gnu/services/hurd.scm b/gnu/services/hurd.scm
index b3b4305..e0891d6 100644
--- a/gnu/services/hurd.scm
+++ b/gnu/services/hurd.scm
@@ -32,6 +32,7 @@
   #:export (hurd-console-configuration
             fancy?
             hurd-console-service-type
+            hurd-loopback-service-type
             hurd-service->shepherd-service
             hurd-ssh-configuration
             hurd-ssh-service-type
@@ -54,6 +55,7 @@
       (($ <hurd-ttys-configuration>) (hurd-ttys-shepherd-service config))
       (($ <openssh-configuration>) (hurd-ssh-shepherd-service config))
       (($ <syslog-configuration>) (syslog-shepherd-service config))
+      (('loopback) (hurd-loopback-shepherd-service #f))
       (('user-processes) (hurd-user-processes-shepherd-service #f))
       (_ '()))))
 
@@ -154,6 +156,33 @@ Hurd.")))
 
 
 ;;;
+;;; Dummy hurd-loopback service, required for guix-daemon.
+;;;
+
+(define (hurd-loopback-shepherd-service _)
+  "Return the 'loopback' Shepherd service."
+
+  (list (shepherd-service
+         (documentation "Dummy for bootstrapping (gnu services) on the Hurd.")
+         (provision '(loopback))
+         (requirement '())
+         (start #~(const #t))
+         (stop #~(const #t))
+         (respawn? #f))))
+
+(define hurd-loopback-service-type
+  (service-type
+   (name 'loopback)
+   (extensions (list (service-extension shepherd-root-service-type
+                                        hurd-loopback-shepherd-service)))
+   (compose concatenate)
+   (extend append)
+   (default-value '(loopback)) ;canary for hurd-service->shepherd-service
+   (description "Dummy service to bootstrap (gnu services) on the
+Hurd.")))
+
+
+;;;
 ;;; Simple wrapper for <hurd>/libexec/runttys.
 ;;;