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         };
  22       };
  23     };
  24 in
  25 {
  26
  27   ##### interface
  28
  29   options = {
  30
  31     services.liquidsoap.streams = mkOption {
  32
  33       description =
  34         lib.mdDoc ''
  35           Set of Liquidsoap streams to start,
  36           one systemd service per stream.
  37         '';
  38
  39       default = {};
  40
  41       example = {
  42         myStream1 = "/etc/liquidsoap/myStream1.liq";
  43         myStream2 = literalExpression "./myStream2.liq";
  44         myStream3 = "out(playlist(\"/srv/music/\"))";
  45       };
  46
  47       type = types.attrsOf (types.either types.path types.str);
  48     };
  49
  50   };
  51   ##### implementation
  52
  53   config = mkIf (builtins.length streams != 0) {
  54
  55     users.users.liquidsoap = {
  56       uid = config.ids.uids.liquidsoap;
  57       group = "liquidsoap";
  58       extraGroups = [ "audio" ];
  59       description = "Liquidsoap streaming user";
  60       home = "/var/lib/liquidsoap";
  61       createHome = true;
  62     };
  63
  64     users.groups.liquidsoap.gid = config.ids.gids.liquidsoap;
  65
  66     systemd.services = builtins.listToAttrs ( map streamService streams );
  67   };
  68
  69 }