services: wireguard: Export wireguard-configuration-file.

When you want to invoke wg-quick yourself, for example from a script,
this procedure is useful to produce the configuration file for it.

* gnu/services/vpn.scm (define-module)<#:export>:
  Add wireguard-configuration-file.

Change-Id: Ifab8a9d731de19d2943517bf18c156a56fea4cca
Signed-off-by: Nguyễn Gia Phong <cnx@loang.net>

1 files changed, 2 insertions, 0 deletions

diff --git a/gnu/services/vpn.scm b/gnu/services/vpn.scm
index 1acd7dd588e..2ba9e238fb9 100644
--- a/gnu/services/vpn.scm
+++ b/gnu/services/vpn.scm
@@ -92,6 +92,8 @@
             wireguard-configuration-table
             wireguard-configuration-auto-start?
 
+            wireguard-configuration-file
+
             wireguard-service-type))
 
 ;;;