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{ config, pkgs, ... }:
with pkgs.lib;
let
uid = config.ids.uids.mpd;
gid = config.ids.gids.mpd;
cfg = config.services.mpd;
mpdConf = pkgs.writeText "mpd.conf" ''
music_directory "${cfg.musicDirectory}"
playlist_directory "${cfg.dataDir}/playlists"
db_file "${cfg.dataDir}/tag_cache"
state_file "${cfg.dataDir}/state"
sticker_file "${cfg.dataDir}/sticker.sql"
log_file "syslog"
user "mpd"
${cfg.extraConfig}
'';
in {
###### interface
options = {
services.mpd = {
enable = mkOption {
default = false;
description = ''
Whether to enable MPD, the music player daemon.
'';
};
musicDirectory = mkOption {
default = "${cfg.dataDir}/music";
description = ''
Extra configuration added to the end of MPD's
configuration file, mpd.conf.
'';
};
extraConfig = mkOption {
default = "";
description = ''
Extra directives added to to the end of MPD's configuration file,
mpd.conf. Basic configuration like file location and uid/gid
is added automatically to the beginning of the file.
'';
};
dataDir = mkOption {
default = "/var/lib/mpd/";
description = ''
The directory where MPD stores its state, tag cache,
playlists etc.
'';
};
};
};
###### implementation
config = mkIf cfg.enable {
systemd.services.mpd = {
after = [ "network.target" "sound.target" ];
description = "Music Player Daemon";
wantedBy = [ "multi-user.target" ];
path = [ pkgs.mpd ];
preStart = "mkdir -p ${cfg.dataDir} && chown -R mpd:mpd ${cfg.dataDir}";
script = "exec mpd --no-daemon ${mpdConf}";
};
users.extraUsers.mpd = {
inherit uid;
group = "mpd";
extraGroups = [ "audio" ];
description = "Music Player Daemon user";
home = "${cfg.dataDir}";
};
users.extraGroups.mpd.gid = gid;
};
}
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