nixos/modules/services/audio/liquidsoap.nix

   1 { config, lib, pkgs, ... }:
   2
   3 with lib;
   4
   5 let
   6   streams = builtins.attrNames config.services.liquidsoap.streams;
   7
   8   streamService =
   9     name:
  10     let stream = builtins.getAttr name config.services.liquidsoap.streams; in
  11     { inherit name;
  12       value = {
  13         after = [ "network-online.target" "sound.target" ];
  14         description = "${name} liquidsoap stream";
  15         wantedBy = [ "multi-user.target" ];
  16         path = [ pkgs.wget ];
  17         serviceConfig = {
  18           ExecStart = "${pkgs.liquidsoap}/bin/liquidsoap ${stream}";
  19           User = "liquidsoap";
  20           LogsDirectory = "liquidsoap";
  21           Restart = "always";
  22         };
  23       };
  24     };
  25 in
  26 {
  27
  28   ##### interface
  29
  30   options = {
  31
  32     services.liquidsoap.streams = mkOption {
  33
  34       description = ''
  35           Set of Liquidsoap streams to start,
  36           one systemd service per stream.
  37         '';
  38
  39       default = {};
  40
  41       example = literalExpression ''
  42         {
  43           myStream1 = "/etc/liquidsoap/myStream1.liq";
  44           myStream2 = ./myStream2.liq;
  45           myStream3 = "out(playlist(\"/srv/music/\"))";
  46         }
  47       '';
  48
  49       type = types.attrsOf (types.either types.path types.str);
  50     };
  51
  52   };
  53   ##### implementation
  54
  55   config = mkIf (builtins.length streams != 0) {
  56
  57     users.users.liquidsoap = {
  58       uid = config.ids.uids.liquidsoap;
  59       group = "liquidsoap";
  60       extraGroups = [ "audio" ];
  61       description = "Liquidsoap streaming user";
  62       home = "/var/lib/liquidsoap";
  63       createHome = true;
  64     };
  65
  66     users.groups.liquidsoap.gid = config.ids.gids.liquidsoap;
  67
  68     systemd.services = builtins.listToAttrs ( map streamService streams );
  69   };
  70
  71 }