bug#63082: mpd defaul configuration does not work ('No database' error)

[Liliana Marie Prikler <liliana.prikler@gmail.com>]

Hi Maxim,

Am Dienstag, dem 25.04.2023 um 23:11 -0400 schrieb Maxim Cournoyer:
> The cache-directory configuration doesn't seem to be useful so far;
> nothing was being populated under /var/cache/mpd.
> 
> in /var/log/messages, pulseaudio throws a couple errors:
> 
> --8<---------------cut here---------------start------------->8---
> Apr 25 23:06:52 localhost pulseaudio[10356]: [pulseaudio] module-
> jackdbus-detect.c: Unable to contact D-Bus session bus:
> org.freedesktop.DBus.Error.NotSupported: Unable to autolaunch a dbus-
> daemon without a $DISPLAY for X11
> Apr 25 23:06:52 localhost pulseaudio[10356]: [pulseaudio] module.c:
> Failed to load module "module-jackdbus-detect" (argument:
> "channels=2"): initialization failed.
> Apr 25 23:06:52 localhost pulseaudio[10356]: [pulseaudio] cli-
> command.c: stat('/gnu/store/5ahapvp7rnd2ymakyjv1pwwdav7w9wdc-
> pulseaudio-16.1/etc/pulse/default.pa.d'): No such file or directory
> Apr 25 23:06:52 localhost pulseaudio[10356]: [pulseaudio] main.c: No
> card found by this name or index.
> Apr 25 23:06:52 localhost pulseaudio[10356]: [pulseaudio] main.c:
> Source alsa_input.pci-0000_01_01.0.analog-mono does not exist.
> Apr 25 23:06:52 localhost pulseaudio[10356]: [pulseaudio] main.c:
> Sink alsa_output.pci-0000_01_01.0.analog-surround-40 does not exist.
> Apr 25 23:06:52 localhost pulseaudio[10356]: [pulseaudio] server-
> lookup.c: Unable to contact D-Bus:
> org.freedesktop.DBus.Error.NotSupported: Unable to autolaunch a dbus-
> daemon without a $DISPLAY for X11
> Apr 25 23:06:52 localhost pulseaudio[10356]: [pulseaudio] main.c:
> Unable to contact D-Bus: org.freedesktop.DBus.Error.NotSupported:
> Unable to autolaunch a dbus-daemon without a $DISPLAY for X11
> --8<---------------cut here---------------end--------------->8---
Configuring MPD in a vacuum meaningfully is a little difficult. 
Usually, you don't want it to spawn its own pulse, but rather to
communicate with an already existing server that has to allow network
access.  Rather than supposing this, we could make the default a null
sink or similar.

Cheers