squeezelite service: init

nixos/modules/misc/ids.nix

@@ -269,6 +269,7 @@
       nzbget = 245;
       mosquitto = 246;
       toxvpn = 247;
+      squeezelite = 248;
 
       # When adding a uid, make sure it doesn't match an existing gid. And don't use uids above 399!
 
@@ -508,6 +509,7 @@
       nzbget = 245;
       mosquitto = 246;
       #toxvpn = 247; # unused
+      #squeezelite = 248; #unused
 
       # When adding a gid, make sure it doesn't match an existing
       # uid. Users and groups with the same name should have equal

nixos/modules/module-list.nix

@@ -110,6 +110,7 @@
   ./services/audio/liquidsoap.nix
   ./services/audio/mpd.nix
   ./services/audio/mopidy.nix
+  ./services/audio/squeezelite.nix
   ./services/backup/almir.nix
   ./services/backup/bacula.nix
   ./services/backup/crashplan.nix

nixos/modules/services/audio/squeezelite.nix

@@ -0,0 +1,67 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+
+  uid = config.ids.uids.squeezelite;
+  cfg = config.services.squeezelite;
+
+in {
+
+  ###### interface
+
+  options = {
+
+    services.squeezelite= {
+
+      enable = mkEnableOption "Squeezelite, a software Squeezebox emulator";
+
+      dataDir = mkOption {
+        default = "/var/lib/squeezelite";
+        type = types.str;
+        description = ''
+          The directory where Squeezelite stores its name file.
+        '';
+      };
+
+      extraArguments = mkOption {
+        default = "";
+        type = types.str;
+        description = ''
+          Additional command line arguments to pass to Squeezelite.
+        '';
+      };
+
+    };
+
+  };
+
+
+  ###### implementation
+
+  config = mkIf cfg.enable {
+
+    systemd.services.squeezelite= {
+      wantedBy = [ "multi-user.target" ];
+      after = [ "network.target" "sound.target" ];
+      description = "Software Squeezebox emulator";
+      preStart = "mkdir -p ${cfg.dataDir} && chown -R squeezelite ${cfg.dataDir}";
+      serviceConfig = {
+        ExecStart = "${pkgs.squeezelite}/bin/squeezelite -N ${cfg.dataDir}/player-name ${cfg.extraArguments}";
+        User = "squeezelite";
+        PermissionsStartOnly = true;
+      };
+    };
+
+    users.extraUsers.squeezelite= {
+      inherit uid;
+      group = "nogroup";
+      extraGroups = [ "audio" ];
+      description = "Squeezelite user";
+      home = "${cfg.dataDir}";
+    };
+
+  };
+
+}