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authorBruno Victal <mirai@makinata.eu>2023-02-02 20:07:38 +0000
committerLiliana Marie Prikler <liliana.prikler@gmail.com>2023-02-05 06:56:43 +0100
commit637a9c3b264fe8eb76b6ed9f104b635d95632be6 (patch)
tree8b23e81b7735c67fd3b6bc03247e1c4c215e612b /doc
parent5c5f0fc1135ff15f9c4adfc5f27eadd9a592b5d1 (diff)
downloadguix-637a9c3b264fe8eb76b6ed9f104b635d95632be6.tar.gz
services: mpd: Do not hardcode environment variables.
Services should not expect for XDG_RUNTIME_DIR to be set.
Inferring from the past comment, this seemed to resolve an issue when
the service was launched with an _interactive_ user-account,
which tends to have this variable set by the login-manager.

This is not the case for system accounts and setting this variable
results in PulseAudio (launched by the same system user) failing to start
since it attempts to use a nonexistent directory.

Ideally, this service should have a home-service counterpart but the old
behavior can be emulated by setting the environment-variables field to:

(environment-variables
  (list
    (string-append "XDG_RUNTIME_DIR=/run/user/"
                   (number->string (passwd:uid (getpwnam "myuser"))))))

* gnu/services/audio.scm
(mpd-configuration)[environment-variables]: New field.
(mpd-shepherd-service)[start]: Use new field.
* doc/guix.texi (Audio Services)[Music Player Daemon]: Document it.

Signed-off-by: Liliana Marie Prikler <liliana.prikler@gmail.com>
Diffstat (limited to 'doc')
-rw-r--r--doc/guix.texi3
1 files changed, 3 insertions, 0 deletions
diff --git a/doc/guix.texi b/doc/guix.texi
index cd18959db0..e7d56f2504 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -33199,6 +33199,9 @@ The group to run mpd as.
 This is a list of symbols naming Shepherd services that this service
 will depend on.
 
+@item @code{environment-variables} (default: @code{()}) (type: list-of-string)
+A list of strings specifying environment variables.
+
 @item @code{log-file} (default: @code{"/var/log/mpd/log"}) (type: maybe-string)
 The location of the log file.  Set to @code{syslog} to use the local
 syslog daemon or @code{%unset-value} to omit this directive from the