[PATCH] Make assert-valid-graph public

[Andrew Tropin]

I would like to reuse this function for home-shepherd-service for `guix
home` I'm currently implementing. It seems reasonable to make this
function public instead of copying or reimplementing it.

>From ffc244f5845996bf4b0365024ac866c86cef81df Mon Sep 17 00:00:00 2001
From: Andrew Tropin <andrew@trop.in>
Date: Thu, 18 Feb 2021 13:30:22 +0300
Subject: [PATCH] gnu: services: shepherd: Make assert-valid-graph public

---
 gnu/services/shepherd.scm | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/gnu/services/shepherd.scm b/gnu/services/shepherd.scm
index e2ec59f5aa..38b35b6154 100644
--- a/gnu/services/shepherd.scm
+++ b/gnu/services/shepherd.scm
@@ -73,7 +73,9 @@
             shepherd-service-back-edges
             shepherd-service-upgrade
 
-            user-processes-service-type))
+            user-processes-service-type
+
+            assert-valid-graph))
 
 ;;; Commentary:
 ;;;
-- 
2.30.1