2020-09-09 16:19:16 +01:00
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{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.mpdscribble;
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mpdCfg = config.services.mpd;
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endpointUrls = {
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"last.fm" = "http://post.audioscrobbler.com";
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"libre.fm" = "http://turtle.libre.fm";
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"jamendo" = "http://postaudioscrobbler.jamendo.com";
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"listenbrainz" = "http://proxy.listenbrainz.org";
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};
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mkSection = secname: secCfg: ''
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[${secname}]
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url = ${secCfg.url}
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username = ${secCfg.username}
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password = {{${secname}_PASSWORD}}
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journal = /var/lib/mpdscribble/${secname}.journal
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'';
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endpoints = concatStringsSep "\n" (mapAttrsToList mkSection cfg.endpoints);
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cfgTemplate = pkgs.writeText "mpdscribble.conf" ''
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## This file was automatically genenrated by NixOS and will be overwritten.
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## Do not edit. Edit your NixOS configuration instead.
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## mpdscribble - an audioscrobbler for the Music Player Daemon.
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## http://mpd.wikia.com/wiki/Client:mpdscribble
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# HTTP proxy URL.
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${optionalString (cfg.proxy != null) "proxy = ${cfg.proxy}"}
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# The location of the mpdscribble log file. The special value
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# "syslog" makes mpdscribble use the local syslog daemon. On most
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# systems, log messages will appear in /var/log/daemon.log then.
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# "-" means log to stderr (the current terminal).
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log = -
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# How verbose mpdscribble's logging should be. Default is 1.
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verbose = ${toString cfg.verbose}
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# How often should mpdscribble save the journal file? [seconds]
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journal_interval = ${toString cfg.journalInterval}
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# The host running MPD, possibly protected by a password
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# ([PASSWORD@]HOSTNAME).
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host = ${(optionalString (cfg.passwordFile != null) "{{MPD_PASSWORD}}@") + cfg.host}
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# The port that the MPD listens on and mpdscribble should try to
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# connect to.
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port = ${toString cfg.port}
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${endpoints}
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'';
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cfgFile = "/run/mpdscribble/mpdscribble.conf";
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replaceSecret = secretFile: placeholder: targetFile:
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optionalString (secretFile != null) ''
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2021-05-04 15:10:57 +01:00
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${pkgs.replace-secret}/bin/replace-secret '${placeholder}' '${secretFile}' '${targetFile}' '';
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2020-09-09 16:19:16 +01:00
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preStart = pkgs.writeShellScript "mpdscribble-pre-start" ''
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cp -f "${cfgTemplate}" "${cfgFile}"
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${replaceSecret cfg.passwordFile "{{MPD_PASSWORD}}" cfgFile}
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${concatStringsSep "\n" (mapAttrsToList (secname: cfg:
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replaceSecret cfg.passwordFile "{{${secname}_PASSWORD}}" cfgFile)
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cfg.endpoints)}
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'';
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localMpd = (cfg.host == "localhost" || cfg.host == "127.0.0.1");
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in {
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###### interface
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options.services.mpdscribble = {
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enable = mkEnableOption "mpdscribble";
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proxy = mkOption {
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default = null;
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type = types.nullOr types.str;
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description = ''
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HTTP proxy URL.
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'';
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};
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verbose = mkOption {
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default = 1;
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type = types.int;
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description = ''
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Log level for the mpdscribble daemon.
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'';
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};
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journalInterval = mkOption {
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default = 600;
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example = 60;
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type = types.int;
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description = ''
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How often should mpdscribble save the journal file? [seconds]
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'';
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};
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host = mkOption {
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default = (if mpdCfg.network.listenAddress != "any" then
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mpdCfg.network.listenAddress
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else
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"localhost");
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type = types.str;
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description = ''
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Host for the mpdscribble daemon to search for a mpd daemon on.
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'';
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};
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passwordFile = mkOption {
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default = if localMpd then
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(findFirst
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(c: any (x: x == "read") c.permissions)
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{ passwordFile = null; }
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mpdCfg.credentials).passwordFile
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else
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null;
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type = types.nullOr types.str;
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description = ''
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File containing the password for the mpd daemon.
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If there is a local mpd configured using <option>services.mpd.credentials</option>
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the default is automatically set to a matching passwordFile of the local mpd.
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'';
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};
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port = mkOption {
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default = mpdCfg.network.port;
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type = types.port;
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description = ''
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Port for the mpdscribble daemon to search for a mpd daemon on.
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'';
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};
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endpoints = mkOption {
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type = (let
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endpoint = { name, ... }: {
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options = {
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url = mkOption {
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type = types.str;
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default = endpointUrls.${name} or "";
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description =
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"The url endpoint where the scrobble API is listening.";
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};
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username = mkOption {
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type = types.str;
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description = ''
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Username for the scrobble service.
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'';
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};
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passwordFile = mkOption {
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type = types.nullOr types.str;
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description =
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"File containing the password, either as MD5SUM or cleartext.";
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};
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};
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};
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in types.attrsOf (types.submodule endpoint));
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default = { };
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example = {
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"last.fm" = {
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username = "foo";
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passwordFile = "/run/secrets/lastfm_password";
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};
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};
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description = ''
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Endpoints to scrobble to.
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If the endpoint is one of "${
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concatStringsSep "\", \"" (attrNames endpointUrls)
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}" the url is set automatically.
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'';
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};
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};
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###### implementation
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config = mkIf cfg.enable {
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systemd.services.mpdscribble = {
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after = [ "network.target" ] ++ (optional localMpd "mpd.service");
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description = "mpdscribble mpd scrobble client";
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wantedBy = [ "multi-user.target" ];
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serviceConfig = {
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DynamicUser = true;
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StateDirectory = "mpdscribble";
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RuntimeDirectory = "mpdscribble";
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RuntimeDirectoryMode = "700";
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# TODO use LoadCredential= instead of running preStart with full privileges?
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ExecStartPre = "+${preStart}";
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ExecStart =
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"${pkgs.mpdscribble}/bin/mpdscribble --no-daemon --conf ${cfgFile}";
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};
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};
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};
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}
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