142 lines
3.5 KiB
Nix
142 lines
3.5 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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uid = config.ids.uids.mpd;
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gid = config.ids.gids.mpd;
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cfg = config.services.mpd;
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mpdConf = pkgs.writeText "mpd.conf" ''
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music_directory "${cfg.musicDirectory}"
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playlist_directory "${cfg.dataDir}/playlists"
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db_file "${cfg.dbFile}"
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state_file "${cfg.dataDir}/state"
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sticker_file "${cfg.dataDir}/sticker.sql"
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log_file "syslog"
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user "${cfg.user}"
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group "${cfg.group}"
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${optionalString (cfg.network.host != "any") ''bind_to_address "${cfg.network.host}"''}
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${optionalString (cfg.network.port != 6600) ''port "${toString cfg.network.port}"''}
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${cfg.extraConfig}
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'';
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in {
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###### interface
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options = {
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services.mpd = {
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enable = mkOption {
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default = false;
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description = ''
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Whether to enable MPD, the music player daemon.
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'';
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};
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musicDirectory = mkOption {
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default = "${cfg.dataDir}/music";
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description = ''
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The directory where mpd reads music from.
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'';
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};
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extraConfig = mkOption {
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default = "";
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description = ''
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Extra directives added to to the end of MPD's configuration file,
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mpd.conf. Basic configuration like file location and uid/gid
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is added automatically to the beginning of the file.
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'';
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};
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dataDir = mkOption {
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default = "/var/lib/mpd";
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description = ''
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The directory where MPD stores its state, tag cache,
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playlists etc.
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'';
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};
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user = mkOption {
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default = "mpd";
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description = "User account under which MPD runs.";
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};
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group = mkOption {
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default = "mpd";
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description = "Group account under which MPD runs.";
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};
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network = {
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host = mkOption {
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default = "any";
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description = ''
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This setting sets the address for the daemon to listen on. Careful attention
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should be paid if this is assigned to anything other then the default, any.
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This setting can deny access to control of the daemon.
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'';
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};
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port = mkOption {
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default = 6600;
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description = ''
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This setting is the TCP port that is desired for the daemon to get assigned
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to.
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'';
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};
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};
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dbFile = mkOption {
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type = types.str;
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default = "${cfg.dataDir}/tag_cache";
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description = ''
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The path to MPD's database.
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'';
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};
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};
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};
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###### implementation
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config = mkIf cfg.enable {
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systemd.services.mpd = {
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after = [ "network.target" "sound.target" ];
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description = "Music Player Daemon";
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wantedBy = [ "multi-user.target" ];
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path = [ pkgs.mpd ];
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preStart = "mkdir -p ${cfg.dataDir} && chown -R ${cfg.user}:${cfg.group} ${cfg.dataDir}";
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script = "exec mpd --no-daemon ${mpdConf}";
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serviceConfig = {
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User = "mpd";
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PermissionsStartOnly = true;
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};
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};
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users.extraUsers = optionalAttrs (cfg.user == "mpd") (singleton {
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inherit uid;
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name = "mpd";
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group = cfg.group;
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extraGroups = [ "audio" ];
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description = "Music Player Daemon user";
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home = "${cfg.dataDir}";
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});
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users.extraGroups = optionalAttrs (cfg.group == "mpd") (singleton {
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name = "mpd";
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gid = gid;
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});
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};
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}
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