11/21: installer: Change "interfaces" from a variable to a procedure.

[John Darrington]

jmd pushed a commit to branch wip-installer
in repository guix.

commit ae433e07499e2c048fea63155c57f9f1cb7a45f8
Author: John Darrington <address@hidden>
Date:   Wed Dec 21 09:05:51 2016 +0100

    installer: Change "interfaces" from a variable to a procedure.
    
    * gnu/system/installer/network.scm (interfaces): Delete variable,
    (interfaces): New procedure.
---
 gnu/system/installer/network.scm |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/gnu/system/installer/network.scm b/gnu/system/installer/network.scm
index 1aa193b..d638562 100644
--- a/gnu/system/installer/network.scm
+++ b/gnu/system/installer/network.scm
@@ -36,7 +36,7 @@
             network-page-key-handler))
 
 
-(define interfaces (delete "lo"
+(define (interfaces) (delete "lo"
                            (slurp "ip -o link"
                                   (lambda (s)
                                     (match (string-split s #\:)
@@ -133,7 +133,7 @@
                       (getmaxy text-window) 0 #:panel #f))
         
         (menu (make-menu
-               interfaces
+               (interfaces)
                #:disp-proc
                (lambda (datum row)
                  ;; Convert a network device name such as "enp0s25" to