services: Add missing import.

* gnu/services/audio.scm: Import (ice-9 format).
2020-05-13 22:33:25 +02:00 · 2020-05-13 22:33:25 +02:00 · ad263045b9
parent d155c9d934
commit ad263045b9
1 changed files with 1 additions and 0 deletions
--- a/gnu/services/audio.scm
+++ b/gnu/services/audio.scm
@ -24,6 +24,7 @@
  #:use-module (gnu packages mpd)
  #:use-module (guix records)
  #:use-module (ice-9 match)
+  #:use-module (ice-9 format)
  #:export (mpd-output
            mpd-output?
            mpd-configuration