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{ config, lib, pkgs, ... }:
with 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"
${if cfg.network.host != "any" then
"bind_to_address ${cfg.network.host}" else ""}
${if cfg.network.port != 6600 then
"port ${toString cfg.network.port}" else ""}
${cfg.extraConfig}
'';
in {
###### interface
options = {
services.mpd = {
enable = mkOption {
default = false;
description = ''
Whether to enable MPD, the music player daemon.
'';
};
musicDirectory = mkOption {
default = "${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.
'';
};
network = {
host = mkOption {
default = "any";
description = ''
This setting sets the address for the daemon to listen on. Careful attention
should be paid if this is assigned to anything other then the default, any.
This setting can deny access to control of the daemon.
'';
};
port = mkOption {
default = 6600;
description = ''
This setting is the TCP port that is desired for the daemon to get assigned
to.
'';
};
};
};
};
###### 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 ${mpdConf}";
serviceConfig = {
User = "mpd";
PermissionsStartOnly = true;
};
};
users.extraUsers.mpd = {
inherit uid;
group = "mpd";
extraGroups = [ "audio" ];
description = "Music Player Daemon user";
home = "${cfg.dataDir}";
};
users.extraGroups.mpd.gid = gid;
};
}
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