GNU bug report logs - #63082
mpd defaul configuration does not work ('No database' error)

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From: Maxim Cournoyer <maxim.cournoyer <at> gmail.com>
To: 63082 <at> debbugs.gnu.org
Cc: Maxim Cournoyer <maxim.cournoyer <at> gmail.com>
Subject: bug#63082: [PATCH 16/17] services: mpd: Update basic example.
Date: Fri, 28 Apr 2023 10:27:09 -0400

Relates to <https://issues.guix.gnu.org/63082>.

* doc/guix.texi (Audio Services): Do not use a deprecated user form; keep the
default one.  Remove port.  Specify a music-directory.  Mention the importance
of permissions on the music directory.
---
 doc/guix.texi | 19 +++++++++++++++----
 1 file changed, 15 insertions(+), 4 deletions(-)

diff --git a/doc/guix.texi b/doc/guix.texi
index 9be59f9f02..467870e0c4 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -33536,16 +33536,27 @@ Audio Services
 being controlled from the local machine or over the network by a variety
 of clients.
 
-The following example shows how one might run @code{mpd} as user
-@code{"bob"} on port @code{6666}.  It uses pulseaudio for output.
+The following example shows the simplest configuration to locally
+expose, via PulseAudio, a music collection kept at @file{/srv/music},
+with @command{mpd} running as the default @samp{mpd} user.  This user
+will spawn its own PulseAudio daemon, which may compete for the sound
+card access with that of your own user.  In this configuration, you may
+have to stop the playback of your user audio applications to hear MPD's
+output and vice-versa.
 
 @lisp
 (service mpd-service-type
          (mpd-configuration
-          (user "bob")
-          (port "6666")))
+          (music-directory "/srv/music")))
 @end lisp
 
+@quotation Important
+The music directory must be readable to the MPD user, by default,
+@samp{mpd}.  Permission problems will be reported via @samp{Permission
+denied} errors in the MPD logs, which appear in @file{/var/log/messages}
+by default.
+@end quotation
+
 Most MPD clients will trigger a database update upon connecting, but you
 can also use the @code{update} action do to so:
 
-- 
2.39.2

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